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發(fā)布時(shí)間: 2012-11-1 09:20
正文摘要:泵必須能產(chǎn)生足夠大的排出壓力,其值由排出條件所決定。 穩(wěn)定流動(dòng)時(shí)所必需的排出壓力: 式中: 排出管路損失∑hd中已經(jīng)扣除了排出管出口的速度頭損失vs/2g. &n ... |
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