![]() |
| |||
被动红外 | |||
| |||
无源红外探测器; 被动红外探测器 | |||
English thesaurus | |||
| |||
PIR (sensor) |
passive infrared : 33 phrases in 9 subjects |
Air defense | 3 |
Aviation | 4 |
Earth sciences | 1 |
Electronics | 8 |
Engineering geology | 1 |
Oil / petroleum | 1 |
Space | 10 |
Technology | 4 |
United Nations | 1 |