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衡圈 : 27 phrases in 9 subjects |
| Automobiles | 1 |
| Ecology | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 4 |
| Technology | 9 |
| Telecommunications | 8 |
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