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發(fā)布時(shí)間: 2012-10-31 15:30
正文摘要:流道截面為矩形時(shí),縱向旋渦的流阻較大,H和效率相對(duì)較低,但Q較大。流道為半圓形斷面時(shí),H和效率相對(duì)較高,但Q較小。 閉式旋渦泵效率較高,可達(dá)35%一45%。液流是從葉輪外緣進(jìn) ... |
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