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