仙桃| 曲江| 陇南| 桂阳| 肃南| 钓鱼岛| 汉川| 祥云| 涟水| 饶阳| 休宁| 宜黄| 正定| 大悟| 昌吉| 丹东| 宝山| 昌江| 扬州| 玉龙| 龙井| 佛山| 汪清| 红安| 易县| 若羌| 杭锦旗| 成安| 南岳| 沈丘| 开县| 南沙岛| 合江| 饶河| 清镇| 望谟| 文水| 吴江| 四平| 龙里| 洪江| 扶余| 阜康| 涿鹿| 北川| 藤县| 抚顺县| 大方| 牟平| 新郑| 惠东| 荣昌| 正镶白旗| 偃师| 巴塘| 临川| 澜沧| 麦盖提| 丰宁| 东兴| 光泽| 抚远| 海沧| 华阴| 会同| 鲅鱼圈| 峰峰矿| 乐亭| 大理| 叶县| 孟州| 开江| 西丰| 吉林| 壤塘| 万州| 固安| 曲周| 望江| 武陟| 五家渠| 高邮| 哈尔滨| 石柱| 南漳| 崂山| 湖南| 策勒| 安陆| 太湖| 吉县| 常德| 新晃| 林西| 玉田| 弥渡| 安泽| 浑源| 蒲城| 张湾镇| 沙河| 宝丰| 独山子| 南票| 新丰| 湘东| 安多| 儋州| 桂东| 盖州| 古县| 开县| 黄骅| 蓟县| 大余| 水城| 锦州| 诸城| 民乐| 庄浪| 塔河| 东莞| 宁都| 疏勒| 翼城| 堆龙德庆| 普格| 新巴尔虎左旗| 兴义| 茶陵| 和田| 徽县| 珲春| 城口| 达尔罕茂明安联合旗| 安化| 沂水| 宁远| 东明| 尉氏| 揭西| 郑州| 南山| 朝阳市| 襄垣| 昌吉| 宁河| 王益| 高淳| 茄子河| 巢湖| 红原| 基隆| 临潼| 南安| 江油| 呼兰| 合肥| 弓长岭| 洪洞| 五寨| 绥滨| 黎平| 澄海| 新邱| 老河口| 江永| 西畴| 龙口| 屯留| 呈贡| 井冈山| 友好| 安西| 会同| 金坛| 金川| 盘山| 龙泉| 宁河| 玛沁| 双桥| 喀什| 高阳| 禹州| 滕州| 惠山| 湘潭县| 遂川| 黄石| 武进| 崇州| 吉木乃| 永登| 红原| 祁连| 息烽| 岱山| 鲁甸| 茄子河| 阳山| 澳门| 洪江| 丹凤| 防城区| 龙川| 吉安县| 金川| 大余| 温泉| 淇县| 莒南| 大安| 太谷| 朝阳县| 元江| 莱州| 尉氏| 邓州| 利辛| 孝昌| 陈巴尔虎旗| 万全| 新津| 忠县| 长丰| 丰镇| 扶风| 嘉定| 涿州| 泽库| 瑞安| 宁城| 海沧| 河南| 垣曲| 灵丘| 新邵| 胶南| 舒城| 榆中| 江达| 涠洲岛| 分宜| 栾川| 太谷| 大姚| 荆门| 剑川| 信宜| 漳州| 昭苏| 遵化| 湾里| 武鸣| 石楼| 孟村| 宁强| 乌海| 新县| 南岳| 德安| 安福|

“减负”需提升整个社会的“教育素养”

2019-08-23 16:08 来源:中国涪陵网

  “减负”需提升整个社会的“教育素养”

  Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)Stunningaerialshotsofmountains,grasslandsanddesertsinNorthwestChinasQinghaiProvince.(Photo/ChinaDaily)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)AerialphototakenonJune9,2018showsawetlandintheKubuqiDesertofOrdosCity,northChina(Xinhua/PengYuan)

Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)Thesepaddyfield"paintings"atanagriculturalparkinShenyang,capitalofNortheastChinasLiaoningProvince,featuretheAvalokitesvara,sXibozucounty.(Photo/)HuaRunmei,agirlborninthe90sandfromYunnanProvince,checksacoffeetreeinherhometown,DakaiheVillagenearPuerCity,YunnanProvince.(Photo:CuiMeng/GT)Worriedaboutthelowpricesofcoffeebeansfromherhometown,HuaRunmei,agirlborninthe90sandfromYunnanProvince,returnedtoherhometownDakaiheVillage,locatednearPuerCity,YunnanProvince,thabachelorsdegreeininteriordesign,andnowgrowshigh-qualitycoffeebeans,,’erCity,YunnanProvince.(Photo:CuiMeng/GT)HuaRunmeisortscoffeebeanswithfellowvillagers.(Photo:CuiMeng/GT)(Photo:CuiMeng/GT)Avillagersortscoffeebeansonawoodentable.(Photo:CuiMeng/GT)HuaRunmeimakespour-overcoffeewithlocalbeans.(Photo:CuiMeng/GT)HuaRunmeimakespour-overcoffeewithlocalbeans.(Photo:CuiMeng/GT)HuaRunmeiexhibitsdifferentkindsofcoffeebeansamples.(Photo:CuiMeng/GT)

  ,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)ExamineestakeaselfiewiththeirfamilybeforethenationalcollegeentranceexaminationoutsideanexamvenueinChangchun,northeastChinasJilinProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LinHong),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan),eastChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/XuXiaoxuan)ExamineesprepareforthenationalcollegeentranceexaminationoutsidetheexamvenueatFenyangHighSchoolinLyuliangCity,northChinasShanxiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/CaoYang)ExamineesenteranexamvenueinChangchun,northeastChinasJilinProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LinHong),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)Anindependentformationof55femalehonorguardsofthePeoplesLibera,whousedtostandwiththemalehonorguardssincetheirdebutin2014,areappearingasanindependentformationforthefirsttime.(Photo/Xinhua)Anindependentformationof55femalehonorguardsofthePeoplesLibera,whousedtostandwiththemalehonorguardssincetheirdebutin2014,areappearingasanindependentformationforthefirsttime.(Photo/Xinhua)Anindependentformationof55femalehonorguardsofthePeoplesLibera,whousedtostandwiththemalehonorguardssincetheirdebutin2014,areappearingasanindependentformationforthefirsttime.(Photo/Xinhua)Anindependentformationof55femalehonorguardsofthePeoplesLibera,whousedtostandwiththemalehonorguardssincetheirdebutin2014,areappearingasanindependentformationforthefirsttime.(Photo/Xinhua)

  AvisittoZhangjiajieincentralChina’,,,likegiantbambooshoots,,,itisbelievedthatthelandformdesignoftheplanetPandorainJamesCameron’shitmovie“Avatar”,oneofthepeaks,theSouthernSkyMountain,wasrenamedAvatar-Hallelu,!TianmenMountainTheuniquelandscapeofqu,000karstpinnaclesaddgrandeurtoastonepeakforestofsteepcliffs,,,ortheMountainoftheGatetoHeaven,,itlookslikeapassagewaytothesky,,however,,uphill“stairwaytoheaven.”Ontheothersideofthe“gate”sitstheTianmenTemple,aBuddhisttemplewithahistoryofmorethan1,,theholecouldbeseenfromthesouthernportoftheZhangjiajieRiver,“thelandoftreasure.”LiNa,singerofthehitfolksong“TibetPlateau,”contributedtothemysteriousnessofthemountainwhenshesaidshefelta“power”whisperingtoherinthetempleaftershewalkedthroughthe“gate.”Suddenly“enlightened,”,,:258yuanHowtogetthere:,5,,6withtheopeningofa375-meter-longglassbridgecalledYuntiandu(“CrosstheSky”),’,’,highbloodpressure,,withspectacularmountainsceneryandstonepinnaclesflankingtheexperience.  AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)AspeciallaneforphubberswhoarebusywithphonesormobiledeviceswherevertheygohasbeenbuiltinXi’an,NorthwestChina’lowertheirheadsandgazeintothecellphones,butsomecitizensfrownontheidea.(Photo:ChinaNewsService/ChenYing)

FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)FirefightingauthoritiesinChangchunCity,NortheastChina’sJ,assistedbysearchdogsandadvanceddevices,testedtheirknowledgeandskillsinquakeemergencyresponsesthroughdifferentscenarios,suchasremovingbuildingdebriswithmachines.(Photo:ChinaNewsService/MaXuewen)

  FolkartistZhangBinmakesdoughfigurinesinanintangibleculturalheritagefairinShenyang,capitalofnortheastChinasLiaoningProvince,June9,ritageDayonSaturday.(Xinhua/YaoJianfeng)PeoplevisitChineseculturalheritageartexhibitioninGuangzhou,southChinasGuangdongProvince,June9,ritageDayonSaturday.(Xinhua/LuHanxin)ApersonvisitsChineseculturalheritageartexhibitioninGuangzhou,southChinasGuangdongProvince,June9,ritageDayonSaturday.(Xinhua/LuHanxin)InkstoneamateurscompeteinaninkstonecarvingcontestinWuyuan,eastChinasJiangxiProvince,June9,ritageDayonSaturday.(Xinhua/SongZhenping)AchildgetshissugarpaintinginanintangibleculturalheritagefairinShenyang,capitalofnortheastChinasLiaoningProvince,June9,ritageDayonSaturday.(Xinhua/YaoJianfeng)AfolkartistcommunicateswithonlineaudienceinnorthChinasTianjinMunicipality,June9,ritageDayonSaturday.(Xinhua/LiRan)

  AppleCEOTimCooktakesthestageduringApplesWorldwideDeveloperConference(WWDC)attheSanJoseConventionCenterinSanJose,California,theUnitedStates,June4,2018.(Xinhua)AparticipanttakesphotosduringApplesWorldwideDeveloperConference(WWDC)attheSanJoseConventionCenterinSanJose,California,theUnitedStates,June4,2018.(Xinhua)AppleCEOTimCooktakesthestageduringApplesWorldwideDeveloperConference(WWDC)attheSanJoseConventionCenterinSanJose,California,theUnitedStates,June4,2018.(Xinhua)TheApplesWorldwideDeveloperConference(WWDC)isheldattheSanJoseConventionCenterinSanJose,California,theUnitedStates,June4,2018.(Xinhua)TheApplesWorldwideDeveloperConference(WWDC)isheldattheSanJoseConventionCenterinSanJose,California,theUnitedStates,June4,2018.(Photo/Xinhua)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)PeonyflowersareinfullbloominthepeonyparkofBaomavillageatthefootofChangbaiMountain,,whichishometo106varietiesofpeonyspecies,coversanareaof20,000squaremeters.(PhotobySunMingsheng/)

  XiangXiang,thefemalegiantpandaborninJapanlastyear,turns1yearoldatUenoZooinTokyo,Japan,June12,suggestionsfromthepublic.(Photo/IC)VisitorstakephotosofXiangXiang,thefemalegiantpandaborninJapanlastyear,atUenoZooinTokyo,June12,onTuesday.(Photo/IC)XiangXiang,thefemalegiantpandaborninJapanlastyear,turns1yearoldatUenoZooinTokyo,Japan,June12,2018.(Photo/IC)PandaXiangXiangwalkswithitsmotheratUenoZooinTokyo,Japan,June12,,borninJapanlastyear,turned1yearoldonMonday.(Photo/IC)

  AQingDynastycodefan(Photo:LiHao/GT)AtownshistoryOrganizedinchronologicalorderintofoursections,theexhibitionexploreshowthedistrictdevelopedfromasmallcountyintheancientregionofYouzhou-aregionthatcoveredwhatisnowBeijing,NorthernHebeiProvinceandpartsofLiaoningProvince-toamajorcommercialriverhubandroyalpowercenter."Previously,myimpressionofTongzhouwasofasuburbanareathatonlyrecentlygrabbedpublicattentionbecauseitwaschosenasasub-administrativecenter,butitisinterestingtolearnthatthedistricthadactuallybeenakeyareasinceancienttimes,"WuLin,avisitorwholivesinBeijing,searlyhistorythroughdisplaysofShangDynasty(1600-1046BC)pottery,bronzecontainersandstonetools,whilethesecondsectionfocusesonthedistrictshistoryfromtheQinDynasty(221BC-206BC),whenitofficiallybecameacounty,totheTangDynasty(618-907).ThethirdandthefourthpartsfocusonTongzhousroleastheendstopoftheGrandCanal,thewaterwaythatsouthernfoodproducersusedtoshiptheirgoodstoBeijing,theroyalcapitalfromtheYuantotheQing."FortheMingandQingsection,weputondisplayaseriesofluxuryitemssuchasgold,silverandlacquerworkstoshowcasethedistrictsprosperityduringthattimewhenitwasakeyhubalongtheBeijing-HangzhouGrandCanal,"GaoHongqing,amemberfromthemuseumsBeijingHistoryResearchDepartmentwhotookpartinorganizingtheexhibition,,around18setsofYuanporcelainsfromtheremainsoftheancientcityofLuxian,twoancientmapsdepictingthewaterwayrunningthroughthedistrictaswellaswrittenmaterialsthatprovideinsightintotheinner-workingsoftheportnumberamongthesection,some61centimetersinwidthwhenopenedandcoveredinvariouseye-catchingsymbols,wasaninterestingtoolusedbythosewhooversawfooddelivery"topreventmalpracticesbyagentsduringtheinspectionprocess,"fywhichagent,eachofwhomhadbeenassignedadifferentsymbol,  AdronephotoshowstheBalingRiverBridgeoveravalleyinGuanlingCounty,SouthwestChina’sGuizhouProvince,June5,,the1,564-meter-longsuspensionbr,088meters.(Photo/IC)AdronephotoshowstheBalingRiverBridgeoveravalleyinGuanlingCounty,SouthwestChina’sGuizhouProvince,June5,,the1,564-meter-longsuspensionbr,088meters.(Photo/IC)AdronephotoshowstheBalingRiverBridgeoveravalleyinGuanlingCounty,SouthwestChina’sGuizhouProvince,June5,,the1,564-meter-longsuspensionbr,088meters.(Photo/IC)

  AnaerialviewofacolorfulsaltlakeinYuncheng,ShanxiProvince,June6,,thesaltlake,knownasChinas"DeadSea",displaysdifferentcolorsasaresultofmicroorganismsinthewater.(Photo/IC)AnaerialviewofacolorfulsaltlakeinYuncheng,ShanxiProvince,June6,,thesaltlake,knownasChinas"DeadSea",displaysdifferentcolorsasaresultofmicroorganismsinthewater.(Photo/IC)AnaerialviewofacolorfulsaltlakeinYuncheng,ShanxiProvince,June6,,thesaltlake,knownasChinas"DeadSea",displaysdifferentcolorsasaresultofmicroorganismsinthewater.(Photo/IC)

  PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)Asthe2018FIFAWorldCupapproaches,letsseehowgiantpandasinSWChinasSichuanarepreparingforthebigevent!PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)PandasshowofftheirsoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)ApandashowsoffitssoccerskillsattheChinaConservationandResearchCenterforGiantPandainSouthwestChinasSichuanProvinceonJune10aheadoftheFIFAWorldCup.(Photo/CourtesyoftheChinaConservationandResearchCenterforGiantPanda)

  ,capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)ExamineestakeaselfiewiththeirfamilybeforethenationalcollegeentranceexaminationoutsideanexamvenueinChangchun,northeastChinasJilinProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LinHong),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan),eastChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/XuXiaoxuan)ExamineesprepareforthenationalcollegeentranceexaminationoutsidetheexamvenueatFenyangHighSchoolinLyuliangCity,northChinasShanxiProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/CaoYang)ExamineesenteranexamvenueinChangchun,northeastChinasJilinProvince,June7,mination,whichtakesplacefromJune7to8.(Xinhua/LinHong),capitalofChina,June7,mination,whichtakesplacefromJune7to8.(Xinhua/ShenBohan)TheaerialphotoseriesofthecountrysideinSWChinasChongqingLiangpingdistrictwinsthefirstprizeatthe2018NationalYangtzeRiverPhotoCompetitionheldbytheOfficeoftheCentralCyberspaceAffairsCommission,theMinistryofEcologyandEnvironmentand1,,395participantsfromallwalksoflifeandtheirworksreflectedthenaturalbeautyandpeopleslifealongtheriver.(Photo/ChinaDaily)TheaerialphotoseriesofthecountrysideinSWChinasChongqingLiangpingdistrictwinsthefirstprizeatthe2018NationalYangtzeRiverPhotoCompetitionheldbytheOfficeoftheCentralCyberspaceAffairsCommission,theMinistryofEcologyandEnvironmentand1,,395participantsfromallwalksoflifeandtheirworksreflectedthenaturalbeautyandpeopleslifealongtheriver.(Photo/ChinaDaily)TheaerialphotoseriesofthecountrysideinSWChinasChongqingLiangpingdistrictwinsthefirstprizeatthe2018NationalYangtzeRiverPhotoCompetitionheldbytheOfficeoftheCentralCyberspaceAffairsCommission,theMinistryofEcologyandEnvironmentand1,,395participantsfromallwalksoflifeandtheirworksreflectedthenaturalbeautyandpeopleslifealongtheriver.(Photo/ChinaDaily)TheaerialphotoseriesofthecountrysideinSWChinasChongqingLiangpingdistrictwinsthefirstprizeatthe2018NationalYangtzeRiverPhotoCompetitionheldbytheOfficeoftheCentralCyberspaceAffairsCommission,theMinistryofEcologyandEnvironmentand1,,395participantsfromallwalksoflifeandtheirworksreflectedthenaturalbeautyandpeopleslifealongtheriver.(Photo/ChinaDaily)

  

  “减负”需提升整个社会的“教育素养”

 
责编:

进击的消费级无人机②:行业应用可行吗?实测很难拍清车牌号

2019-08-23 11:00:00 环球网 分享
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  【环球网无人机频道 记者 赵汗青】在美国墨西哥的边境也要部署消费级无人机来巡逻。此外有些预算不充足的基层单位没有足够的预算采购昂贵的工业级无人机,消费级无人机能解决“有无的问题”。那么这些价格像手机一样便宜的“小飞机”能发挥多大作用呢?实践是检验真理的唯一标准,环球网无人机频道的实测结果在此。

 

  飞起来能看到啥?

  “站得高,看得远”,以无人机视角看地面首先可以看得更远。目前大多数消费级无人机的飞行高度被限制在120米高。普通人对高度没有概念,但小型航拍无人机飞到这个高度,肉眼已经比较难看见。

  环球网无人机频道在评测时所航拍的几张道路的照片,通过在地图上对比,我们发现视野被延伸到至少850米处。即使在雾霾天中也可以分辨出500米以内的汽车、可以直观的看出道路的拥堵情况。

  

  通过图传系统传输回地面的实时画面清晰度与在手机上看这几张照片差不多。曾经有工作人员凑上来看高速上有没有抛锚的车辆,他对清晰度表示满意。但是需要注意不同的产品图传性能差距很大,有些可以达到高清、接到ipad上依然清晰;有些则就像是在看枪版的电影。

  拍摄4K清晰的照片,在电脑上放大,房顶的情况一览无余,可以看出有没有违章建筑。

  

  “上帝视角”更大的好处是可以飞跃山、楼房等一些障碍物。在雾霾天可以飞到工厂上空看看有没有停产;在林区则可以查看有没有火灾。

 

  能飞多远?

  最近消费级无人机的技术突飞猛进的发展,无线信号所能达到的控制半径越来越远。有些消费级无人机标称图传距离7公里、甚至3000元的入门级无人机也号称可达4公里的图传。但是限制飞行半径的因素很多,决定木桶储水量的是那根短板。

  根据《轻小型无人机(试行)规定》,重量小于等于7公斤的微型无人机在视距内飞行无须证照管理。法规上的视距是距离500米、相对高度120米。所以许多应用场景下的飞行半径也建议在500米内。

  

  规定中还有在人烟稀少的空旷地区不受证照管理,但注意:性能比较好的消费级无人机滞空时间也仅在20分钟左右(余电30%降落),再考虑到风力等天气因素,还是在1-2公里的半径内活动相对比较放心,道路、管线等的直线巡逻可以稍远些,但也要量力而为。

 

  能看多仔细呢?

  消费级无人机受制于成本、体积、重量的限制普遍没有变焦镜头,在高空并不能看清特别细小的东西。

  

  在120米高时即使看正下方的车辆也只能大概的看出颜色、卡车、公交、还是小客车。人员则更难发现。拍摄4K照片后,在电脑放大也只是能分辨出是轿车还是SUV。

  

  不能变焦的消费级无人机若需要看清地面的目标,只能降低飞行高度。这架售价约3000元的无人机,即使在4K照片上看清车牌号也需要降低到15米左右的树梢高度(后两位有码)。

  

  较为昂贵的消费级无人机情况要好一些,但飞行高度也是树梢高度(后两位有码)。这样的高度撞到障碍物的风险大、受到干扰的可能性也高。控制半径也会因障碍物遮挡而降低,只能在非常近的范围内执行任务。

  有业内人士表示:警用无人机在巡逻道路时为了防止发生事故而影响交通,一般在道路的侧上方飞行、斜看道路。这样距离目标就更远了,所以用消费级无人机抓拍违章还是有点困难。

 

  隐蔽性怎么样?

  警用等侦查用途的无人机对隐蔽性往往有要求,有些要求尽量隐蔽侦查、有些则要求尽量不隐蔽(威慑飞行)。

  

  业内人士介绍:工业级无人机在侦查飞行时,若是追求隐蔽,则可以飞到200-300米以上,用变焦镜头观察地面;而若是追求威慑,则可以飞到100米,机上还可以挂载警灯与警报器。

  而消费级因为不能通过镜头拉近目标,在拍摄细节时需要飞得很近,很容易暴露;可是机身面积小、不能喷绘大尺寸的logo、气势也弱,飞行没有威慑力。

  

  不过如果需要不被发现,可以尽量在太阳的方向飞行。无人机会被刺眼的阳光盖住(二战的空袭也经常以太阳做掩护)、而且拍摄的效果也好。

 

  可靠性如何?

  

  我们评测的无人机都会经过多次的试飞,从试飞的结果来看现在的消费级无人机可靠性已经相对不错。前几年经常出现的“磁干扰”、“一键放生”出现的可能性已经很低,图传的距离与稳定性也令人满意。

  

  但是消费级无人机毕竟是消费级,且不说设计标准、控制算法的不同,就传感器元器件的角度讲,许多消费级无人机的整机价格比工业级无人机的一个磁罗盘还便宜。这会在可靠性、抗干扰等方面有差距。环球网军事频道的同事曾经尝试用消费级无人机航拍某艘驱逐舰,因电磁干扰而完全无法起飞。

  看完这些,相信大家对消费级无人机的基本性能有了了解:受制于成本与设计思想,消费级无人机的性能还有许多瓶颈,但它们已经远不是几年前那般原始。从测试结果也可以推测出它们在你所从事的行业中能发挥多大作用。未来的消费级无人机还将有怎样的变化?还以拓展出怎样的应用场景?环球网无人机频道将持续关注。

责编:赵汗青
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