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人生若如初相見易連愷年夜終局是什麽 在原著中為什麽死了

時間:2025-05-13 05:57:07 來源:網絡整理 編輯:時尚

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BEIJING,Sept.21(Xinhua)--Chineseengineershavebuiltthefirstmedium-frequencyantennaoftheSquareKilomete

BEIJING,Sept.21(Xinhua)--Chineseengineershavebuiltthefirstmedium-frequencyantennaoftheSquareKilometerArray(SKA),markingasignificantsteptowardstheconstructionoftheworld'slargestradiotelescopearray.TheantennawassetupatatestingsiteinShijiazhuang,capitalofHebeiProvince,onWednesday.ItsignifiestheleadingrolethatChinahasplayedinprovidingthecorefacilityandantennasolutionfortheSKA.SKAisanetworkofthousandsofradioantennasofvaryingtypesandsizes,locatedatseveralsitesinWesternAustraliaandSouthernAfrica.Itwillfeaturemuchhighersensitivityandsurveyspeedsthananyotherradioinstrumentdevelopedsofar.ThefirstantennawilllayatechnicalfoundationforSKA's64setsofmid-frequencyantennas,whichwillbedevelopedbyinstitutionsfromChina,SouthAfricaandItaly.Theinternationalbigscienceprojectwasjointlyfunded,builtandrunbymorethan10countries,withChinabeingoneofthesevenfoundingmembersandasignatorytotheSKAObservatoryConventionsignedin2019.Thearray'sscientificgoalsincludetheformationofthefirstlight-emittingobjectsintheuniverse,thenatureofdarkenergy,cosmicmagneticfieldandgravity,aswellasthesearchforlifemoleculesandevenextraterrestrialcivilization.Editor:DisclaimerTheviewsandopinionsexpressedinthisarticlearethoseoftheauthor's,GMW.cnmakesnorepresentationsastoaccuracy,suitability,orvalidityofanyinformationonthissiteandwillnotbeliableforanyerrors,omissions,ordelaysinthisinformation.
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