achromatic correction spacer
消色校准衬垫
热门单词
- ABAI
- ablator ceramics
- above suspicion
- abrasive compound
- absolute dollar criterion
- absorptionpyrometer
- abstract book
- abutment tool block
- acceptance liability
- accepted product
- accessibility for repair
- accessory food substance
- accident
- accompanying advice note
- accumulator tube
- accuracy index
- accurate range marker
- acentric
- acetic ester
- acetocopal
- acetoxyacetone
