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