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| optical generator | |||
| optical repeater | |||
| optic repeater | |||
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| optical regenerative repeater | |||
| 光 中继器: 21 phrases in 7 subjects |
| Computer networks | 1 |
| Electronics | 4 |
| Information technology | 6 |
| Multimedia | 1 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 3 |
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