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
