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