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圆半径 : 97 phrases in 14 subjects |
| Automobiles | 17 |
| Aviation | 5 |
| Bridge construction | 1 |
| Construction | 1 |
| General | 5 |
| Mathematics | 1 |
| Metallurgy | 19 |
| Nautical | 1 |
| Oil / petroleum | 5 |
| Plastics | 4 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 34 |
| Wind Energy | 2 |
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