coal mine powder的意思|示意
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煤矿粉
coal mine powder的网络常见释义
煤矿用炸药 ... coal mine modernization 煤矿现代化 coal mine powder 煤矿用炸药 coal mine survey 煤矿测量 ...
coal mine powder相关例句
The importance of it in safety production of coal mine was discussed through accident case, according to theory of blasting powder and function of stemming.
本文根据炸药的作功原理和炮眼封泥的作用，通过事故案例，论述炮眼封泥质量在煤矿安全生产中的重要性。