nitrogen family explosives
相关英语词汇推荐
- cement injection
- Intermediate product
- single stage separation
- hand held drifter
- alidade
- fast extraction
- lump formation
- internal impedance
- Residual expansion rate
- burning time
- worm gear drive
- tunneling equipment
- through
- bolt installing equipments
- elastoplastic rock
- full load running
- tilting cup feeder
- drop crushing
- crusher head
- workings