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cai mei gong zuo mian chao qian xiu hu zhi zhu de fang dao fang fa
Author(s): 
Pages: 21
Year: Issue:  4
Journal: Safety in Coal Mines

Keyword:  超前支柱钢丝绳拉钩防倒;
Abstract: 介绍了采煤工作面超前修护支柱采用“钢丝绳拉钩”防倒的制作、使用方法及其效果。
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