Environment of common silicious dust work, be like drilling of use pneumatic drill or blow up, mineral separation, or it is ore broken, abrade, choose;
的矽尘作业环境,如使用风钻凿岩或爆破、选矿,或是矿石破碎、研磨、筛选;
Environment of common silicious dust work, be like drilling of use pneumatic drill or blow up, mineral separation, or it is ore broken, abrade, choose;
的矽尘作业环境,如使用风钻凿岩或爆破、选矿,或是矿石破碎、研磨、筛选;
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