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