karst mineral deposit
常見例句
- Prevention and control of underground water harm of karst mineral deposit is always a difficult problem in the field of mine water prevention and control.
巖溶鑛牀地下水害的防治一直是鑛山防治水界的一個難題，而傳統(tǒng)的帷幕注漿技術(shù)存在堵水率低、投資高、針對性不強等問題。 返回 karst mineral deposit