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