changing open pit mining into underground mining
英
美
露天转地下
changing open pit mining into underground mining的用法和样例:
例句
Study on Feasibility of Transfer from Open-Pit Mining to Underground Mining in Washan Pit of Nanshan Mining Co.
南山矿业公司凹山采场露天转地下可行性研究。
目录
查词历史
英 汉