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