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| 总动力压头; 总动力水头 | |||
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| 水泵的实际扬程 | |||
| 总动压头 | |||
| 总动力的压头 TDH; 总动力压头; 总动力水头 | |||
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total dynamical head : 2 phrases in 1 subject |
| Technology | 2 |
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