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