Through comparison testing of the surface of reflowing holes of the external-mix self-sucking pump, the best design is determined.
对外混式自吸泵的回流孔面积进行对比试验，确定最佳设计方案。
Through comparison testing of the surface of reflowing holes of the external-mix self-sucking pump, the best design is determined.
对外混式自吸泵的回流孔面积进行对比试验，确定最佳设计方案。
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