余留的英文怎么说
2012-07-09 02:35
余留的英文:
ramain
- Initiation is carried out by using millisecond detonators, the opening taking the form of holes in the remaining pillar
使用毫秒雷管进行起爆,开拓的方式则是在余留的矿柱中打眼放炮实现的。