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角开度 : 20 phrases in 10 subjects |
| Agriculture | 1 |
| Automated equipment | 1 |
| Automobiles | 6 |
| Compressors | 1 |
| Construction | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Technology | 4 |
| Textile industry | 2 |
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