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| 光敏指示器 | |||
| 光电管指示器; 光敏电阻 | |||
| 光电导探测器 | |||
| 光电导检测器 | |||
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photoconductive detector : 11 phrases in 5 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Electronics | 1 |
| Space | 6 |
| Technology | 2 |
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