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