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