... primary crushing 初次破碎 primary drilling 初步打眼 primary slime 原生煤泥 ...
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... 全工作面一次爆破 frll-face blasting 一次爆破炮孔钻进 primary drilling 复发，再次发生 recurrence ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
The remaining 5, 000 meters of drilling will be focused on 12 primary targets that the company has identified.
FORBES: Northern Freegold To Continue Growing Freegold Mountain Project - Burges
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