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