actual challenges
现实挑战
热门单词
- absence of convection
- absolute scattering power
- abutment tooth
- AC pattern
- AC signal
- acceptability quality level
- Accoloy
- accommodation note
- accumulating counter
- acetylene welding torch
- acid acceptor
- acoustical duct lining
- acousto-optic scanning
- acoustoelectronics
- acridinic acid
- acrochordal
- acrolein resin
- act of tort
- actinide chalcogenide
- Actispray (抗菌素)
- activated state
