alignment-telescope bracket
校准用望远镜托架
热门单词
- air pump valve
- air purge unit
- air pump governor
- air purged instrument
- air purifier
- air pyelography
- air puncher
- air purge
- air quality and emission standard
- air quality control
- air quality criteria
- air quality standards
- air quarantine
- air quenching
- air quality control region
- air quality model
- air radiator
- air raid alarm
- air ram
- air ram jolt
- air rammer
