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| 混流式水轮机底环; 旋桨式水轮机基础环; 中环 | |||
| 基础环 | |||
| 转轮室中环; 底环; 出口环; 前结圈 | |||
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discharge ring : 7 phrases in 3 subjects |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Technology | 4 |
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