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