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