telephone switchboard
相关英语词汇推荐
- control state
- Firemaster CA
- fire-proof fiber;fireproof
- water officer;water supply officer
- forest farm
- Cauterization
- watering system
- α-AlH3
- combustion space
- resource officer
- door holding device
- data acquisition and processing
- thermal fracture
- compressed air tool
- fire drencher
- ceiling panel heating
- composite explosive
- minimum occupant load
- fail-obvious condition
- avoidable accident