什么是世界上最坚硬的物体

Itsiallistallisthemostfrant的"石头"intheworldandandandisvervaluable！ 在2006年，Acouplewastwalkingonabeachinwesternaustraliawhentheyacccindellydiscentallydiscoveredallaugeedahugegrayball。 首先，他们思考了wasanordinarytreestumporstone，buttheSurfaceOftheObjectWassHiningWithluster，anditsvaluewasfargreaterthanthanthathatathatathatathatathatofornarystonesbaustausebaudafeof...

itisknownas，"最难"的油漆！pumpkinsprayisextremelyharditfallsitflomhighaltitudewithAutanyDamage.hathiSit？1.line-line-eSurfaceOfTheObject...whighaltitudeofthericehithardonthegrongingwithoutanysimentificantdamage。 thecompletesmoothshapefthepumpkinsurfacehasnochanges.thisextremetestlucedemsthatthatthine-xcoingisin...

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Whatexactlyisacarbonsulfideblock?Itis200timesharderthansteeland1000timeslighterthanpaper.Suchahardthinghasanoverallqualityof1000timeslighterthanpaper!Carbonsulfideblockiscalledthekingofmaterials,itisWhat?Infact,ifyousaythenameofgraphene,manynetizenshaveheardofit,buteventhisnewlydiscoveredsubstancecannotbecomparedwithcarbonsulfideblocks. thehardestObjectsdybyhumanssofaristhecarbonsulfideblock，hassetthehardestworldrecord。 Letpeople...