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