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