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