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