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