balance between tunneling and mining (in coal pits)是什么意思、英文翻译及中文解释
balance between tunneling and mining (in coal pits)
词语: balance between tunneling and mining (in coal pits)
解释: 采掘比例关系
词典: 贸易专业英汉词典
balance between tunneling and mining (in coal pits) 相关解释
采掘比例关系 balance between tunneling and mining (in coal pits);ratiobetween cutting and tunneling
采掘比例关系 balance between tunneling and mining (in coal pits);ratiobetween cutting and tunneling