fire detection and alarm
| device
| fire detection and alarm | |
| hydroel.st. | 火灾探测和报警 |
| device | |
| dat.proc. од. | 器件 |
| met. | 仪器; 仪表; 机构; 设计; 草案; 图 |
| tech. | 装置; 设备 |
| |||
| 火灾探测和报警 | |||
|
fire detection and alarm : 5 phrases in 2 subjects |
| Nautical | 4 |
| Nuclear and fusion power | 1 |