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| 可变［调］光衰减器 | |||
| 光可变衰减器 | |||
| English thesaurus | |||
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| OVA | |||
| optical variable attenuator: 12 phrases in 4 subjects |
| Aviation | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Technology | 7 |
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