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| 流向转换 | |||
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| 流量幵关 | |||
| 流量转换器 | |||
| 流量开关 | |||
| 流体开关 | |||
| 液流开关 | |||
| 气流换向器; 水流开关 | |||
| flow switching: 15 phrases in 6 subjects |
| Electric machinery | 3 |
| Electronics | 3 |
| Information technology | 1 |
| Metallurgy | 2 |
| Technology | 5 |
| Wind Energy | 1 |
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