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气力调节 : 32 phrases in 9 subjects |
| Automobiles | 2 |
| Aviation | 6 |
| Compressors | 1 |
| Metallurgy | 1 |
| Nautical | 3 |
| Oil / petroleum | 2 |
| Refrigeration | 4 |
| Space | 3 |
| Technology | 10 |
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