balance between tunneling and mining (in coal pits)是什麼意思、英文翻譯及中文解釋
balance between tunnelj.com//tags-4798-0.html" target="_blank" >ing 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: 貿易專業英漢詞典
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