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發(fā)布時(shí)間: 2012-11-11 11:53
正文摘要:1.離心泵的自動(dòng)引水裝置 各種自吸式離心泵雖能解決離心泵的自吸問題,但會(huì)使泵的結(jié)構(gòu)復(fù)雜化,體積和造價(jià)提高,而且對(duì)泵的效率也有不利的影響。 各種附設(shè)于普通離心泵的自動(dòng)引水裝置,它 ... |
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