karst mineral deposit
常见例句
- 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.
岩溶矿床地下水害的防治一直是矿山防治水界的一个难题，而传统的帷幕注浆技术存在堵水率低、投资高、针对性不强等问题。 返回 karst mineral deposit