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