mechanized haulage 中文意思是什麼
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Special support used in haulage way and return airway of 21123 fully mechanized face during larger ground pressure
21123綜采工作面運輸及回風巷的特殊支護 -
The analysis of matching auxiliary haulage system at fully mechanized coal face
對綜采工作面輔助運輸系統配套分析 -
Reformation of auxiliary haulage system in fully mechanized coal face of wutongzhuang coal mine
梧桐莊礦井綜采工作面輔助運輸系統的改進
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