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chert bit
meaning in Chinese
钻硅质石灰岩用的钻头
Related Words
chert
chert clause
granulated chert
white chert
crystalline chert
ferruginous chert
novaculitic chert
nodular chert
sponge chert
dolocastic chert
chert aggregate
chert arenite
chert breccia
chert clause
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