caving line 中文意思是什麼
caving line
解釋
崩落線-
Coal spontaneous combustion prevention and control technology for coal mining terminal line of overlong fully mechanized top coal caving mining face
超長綜放工作面終采線處煤炭自燃防治技術 -
Analysis on danger of pressure bump when fully mechanized sublevel caving mining face passed through terminal mining line of top slicing seam
綜放面過上分層終采線沖擊地壓危險性分析
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