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| 不 均匀度: 31 phrases in 12 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Chemistry | 1 |
| Compressors | 2 |
| Earth sciences | 1 |
| Electric machinery | 3 |
| Electronics | 3 |
| Metallurgy | 4 |
| Space | 1 |
| Technology | 10 |
| Telecommunications | 1 |
| Wind Energy | 1 |
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