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| 光码盘 | |||
| 光传感器; 光电传感器; 光学传感器; 光电转换器; 光电发送器; 光电变换器 | |||
| оптический датчик: 13 phrases in 4 subjects |
| General | 7 |
| Mechanics | 1 |
| Technology | 4 |
| Telecommunications | 1 |
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