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passive infrared
| target detection
| passive infrared | |
| el. | 无源红外; 被动红外 |
| target detection | |
| mil., air.def. | 目标检测 |
| oil | 目标探测 |
| |||
| 无源红外探测器; 被动红外探测器 | |||
| |||
| 被动红外 | |||
| English thesaurus | |||
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| 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 |
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