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| 光放大器 | |||
| 光学放大器; 光电放大器 | |||
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| 光学放大器; 光放大器; 光电放大器 | |||
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optical amplifier : 46 phrases in 6 subjects |
| Aviation | 1 |
| Electronics | 25 |
| Information technology | 4 |
| Space | 3 |
| Technology | 11 |
| Telecommunications | 2 |
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