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台阶工作面掘进法
巷道或硐室掘进工作面呈台阶状推进的方法。有正台阶工作面掘进法〈heading and belt driving method〉和倒台阶工作面掘进法〈heading and overhand driving method〉之分
expl.
belt-face driving method
台阶工作面掘进法
:
2 phrases
in 1 subject
Explosives and Explosive Ordnance Disposal
2
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