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配盖 : 18 phrases in 9 subjects |
| Automobiles | 4 |
| Chemistry | 1 |
| Compressors | 1 |
| Computer numerical control | 1 |
| Electric machinery | 3 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Technology | 5 |
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