10 亿分率
parts per billion
热门单词
- absorptive cell
- accessory minerals
- accompanying movement
- achromycin
- acid bordeaux
- acid ink blue
- acoustic velocity meter
- acquisition laser
- acratia
- actin
- activation level
- active nitrogen
- actor
- adaptive control
- adenomyoma
- adhesive agent
- adhesive bond strength tester
- adiabatic ellipse
- adjustadle wrench
- adjustment disorder
- adnate
