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