vacuum valve
相关英语词汇推荐
- Quadrature components
- inhibitory action
- pneumatic remote control
- bog
- leading-out
- hard drawn copper wire
- vacuum lock
- steam circulating pipe
- maximum permissible pressure
- autosynchronous
- gravity meter
- value control amplifier
- relay satellite
- intermediate-base resin
- normal condition
- effective projected radiant surface
- pending the issuance of licence
- Warp Beam
- oil heater storage tank
- adjustment of itself