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| 安全溢洪道; 事故溢洪道 | |||
| 非常溢洪道 | |||
| 紧急情况溢水道; 紧急溢洪道; 应急溢洪道; 保险溢洪道 | |||
| emergency spillway: 3 phrases in 2 subjects |
| Electronics | 1 |
| Hydroelectric power stations | 2 |
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