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1#
發表於 2008-1-20 02:15 AM
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carbon under really high pressure then can bcome diamond.. but is still hard to produce a big diamond with that process.. is only manage to produce diamond for factory usage..公仔箱論壇9 i, J; y( p9 n% a% q5 g' L
imagine if this diamond drop on earth..how big dmg will it cause  |
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