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| 光学范围; 视觉范围; 光波波段 | |||
| 光波段; 视觉范围光波段 | |||
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оптический диапазон : 62 phrases in 6 subjects |
| Antennas and waveguides | 2 |
| General | 22 |
| Military | 2 |
| Scientific | 1 |
| Technology | 32 |
| Telecommunications | 3 |
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