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| 光学兀件; 镜片 | |||
| 光学子星 | |||
| 光学部件; 光学元件 | |||
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| 光学子星; 光学元件; 光学部件 | |||
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optical component : 21 phrases in 4 subjects |
| Electronics | 7 |
| Space | 1 |
| Technology | 12 |
| Telecommunications | 1 |
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