balance between tunneling and mining in coal pits是什麼意思、英文翻譯及中文解釋
本文已影響
1.33K人
balance between tunneling and mining in coal pits
詞語: balance between tunneling and mining in coal pits
解釋: 採掘比例關係
詞典: 商務專業英漢詞典
balance between tunneling and mining in coal pits 相關解釋
採掘比例關係 balance between tunneling and mining (in coal pits);ratiobetween cutting and tunneling
採掘比例關係 balance between tunneling and mining (in coal pits);ratiobetween cutting and tunneling