在这里空气排出而水又从回流阀返回到叶轮入口。
Here the air and water discharged from the return valve to the back entrance of the impeller.
经对实验照片的分析可知，叶轮入口颗粒径向速度的大小是造成叶轮冲击磨损的主要原因。
Result of analyzing experiment picturesindicates that particle radial inlet velocity component influences significantly the blade erosionmanner.
泵体和叶轮间形成环形流道，吸入口和排出口均在叶轮的外圆周处。
Impeller and the body formed between circular flow, I inhaled and exports in the row outside the circumference of the impeller.
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