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