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性能试验机 : 15 phrases in 12 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Chemistry | 1 |
| Communications | 1 |
| Compressors | 1 |
| Economy | 1 |
| Mechanics | 1 |
| Metallurgy | 2 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 1 |
| Wind Energy | 1 |
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