permitted explosive
常見例句
- From the general program on development of industrial explosive materials in China, present situation on the safety of permitted explosives for colliery in China was analyzed.
從我國(guó)現(xiàn)階段民爆器材發(fā)展總體規(guī)劃出發(fā)，分析了我國(guó)煤礦許用炸藥安全性的現(xiàn)狀。 返回 permitted explosive