Subject | English | Chinese |
expl. | development blasting | 井巷掘进爆破所谓井巷掘进,是指为开采矿体或煤层而进行的开挖立井、斜井或平巷的作业,为此而采用的爆破称为井巷掘进爆破 |
expl. | development blasting | 掘进爆破 |
expl. | development blasting | 开拓爆破井巷、隧道等掘进工程中的爆破作业 |
tech. | development blasting | 井巷掘进爆破 |
expl. | land development blasting | 土地开发爆破 |
expl. | Research into blasting technology received a considerable apart of the annual research and development budget | 对爆破技术的研究占去历年研究开发预算的相当大的份额 |