Strip mining is widely used as the method for protecting ground surface buildings in many coalmines in Cnina.

条带开采作为保护地面设施的有效措施在我国的很多局矿得到广泛应用。

youdao

Strip mining is widely used as the method for protecting ground surface buildings in many coalmines in Cnina.

条带开采作为保护地面设施的有效措施在我国的很多局矿得到广泛应用。

youdao