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| 光学常数; 光学恒量 | |||
| 光学常量 | |||
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| 光学恒量; 光学常数; 光学常量 | |||
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optical constant : 14 phrases in 4 subjects |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 11 |
| Telecommunications | 1 |
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