radioisotope smoke alarm [核] 放射性同位素烟雾报警器
smoke alarm system 烟气报警系统
self-contained smoke alarm 自给式感烟报警器
automatic smoke alarm system 自动起烟报警系统
smoke pipe fire alarm system 烟管火警系统 ; 烟管式火警信号系统
smoke detecting alarm system 烟雾探测报警系统
automatic smoke type fire alarm 测烟式失火自动报警器
Aspirating smoke detection fire alarm 吸气式烟雾探测火灾报警
N-COUNT A smoke alarm or a smoke detector is a device fixed to the ceiling of a room which makes a loud noise if there is smoke in the air, to warn people. 烟雾报警器
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