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發表於:2017-10-16
MohrcubiccentimetreThevolumeofthiscontainerbe24cubiccentimetre.Jupiter'smoonIo,whosedensityis3.5gramspercubiccentimetre,isallrock.Iftheaugerisoperatedslowly,wecouldtakeo...
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發表於:2018-05-24
centimetregrammesecondcentimetre-gram-secondelectrostaticsystemAcentimetrecanbeinfinitelydividedintosmallerunits.Thevolumeofthiscontainerbe24cubiccentimetre.Tellthesteved...
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發表於:2018-09-08
Theneedforgripoutweighsdrag,soweputoneverysquarecentimetreofwingwecan.Bycontrast,photovoltaiccellsabsorbingsunlightcanproduceabout20wattspersquarecentimetre,providedtheli...