experimental study on shooting self-priming device of self-priming centrifugal pump with inner recirculation
内混式自吸离心泵射流自吸装置的试验研究
Self-priming plastic magnetic pump adopts an outer recirculation structure combining foreign advanced technology.
结合国外的先进技术,采用外混式结构的自吸塑料磁力泵.
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