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