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光度型 : 14 phrases in 9 subjects |
| Electronics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Shipbuilding | 1 |
| Technology | 5 |
| Telecommunications | 1 |
| United States | 1 |
| Wind Energy | 1 |
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