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