这些措施既有利于露天矿的扩帮剥离，又保证了爆区附近民房的安全。

These measures not only are beneficial to ream stripping of opencast mine but also ensure thes...

youdao

这些措施既有利于露天矿的扩帮剥离，又保证了爆区附近民房的安全。

These measures not only are beneficial to ream stripping of opencast mine but also ensure thes...

youdao