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