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