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