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