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