H1——揚(yáng)程1,m; H2——揚(yáng)程2,m; n1——轉(zhuǎn)速1,rpm; n2——轉(zhuǎn)速2,rpm 說明:適用于輸送介質(zhì)不變的情況。此時幾何尺寸比例常數(shù)λL=1 |
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