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| 单闸板 | |||
| 挡潮闸 (门); 单扇闸门 | |||
| single gate: 23 phrases in 6 subjects |
| Air defense | 1 |
| Hydroelectric power stations | 3 |
| Plastics | 3 |
| Space | 2 |
| Technology | 13 |
| Water resources | 1 |
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