accident free
无事故
热门单词
- absolute motion
- abundance
- AC commutator machine
- acetone fermentation
- acetriptine
- acetylene tetrachloride
- acetylenic corrosion inhibitor
- acetysalicylic acid phenobarbital
- achromat
- acid mordant red
- acid resisting
- acid-proof rubber apron
- acid-proof working suit
- acinous cell
- acoustic brick
- acquiescence
- acrophobia
- action set
- actiontherapy apparatus
- active fibre
- adamic earth
