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| 设计期; 设计期限 | |||
| 设计年限 | |||
| 设计期间; 设计周期; 设计阶段 | |||
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design period : 13 phrases in 8 subjects |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 3 |
| Mathematics | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
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