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平行光 : 69 phrases in 12 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Automobiles | 2 |
| Aviation | 2 |
| Electronics | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Physics | 2 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 47 |
| Telecommunications | 2 |
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