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