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