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弹 簧箱 : 25 phrases in 9 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Electric machinery | 2 |
| Electronics | 1 |
| Plastics | 4 |
| Rail transport | 6 |
| Shipbuilding | 1 |
| Technology | 8 |
| Textile industry | 1 |
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