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| 边缘控制 | |||
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| edge control: 25 phrases in 8 subjects |
| Air defense | 1 |
| Automobiles | 3 |
| Electronics | 1 |
| General | 1 |
| Metallurgy | 10 |
| Steel production | 1 |
| Technology | 3 |
| Textile industry | 5 |
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