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發(fā)布時間: 2011-11-3 10:14
正文摘要:離心泵各種汽蝕余量的精心整理——有效汽蝕余量、必需汽蝕余量、臨界汽蝕余量和許用汽蝕余量的比較 汽蝕余量指泵入口處液體所具有的總水頭高出液體汽化壓力的部分。國外稱之為“凈正 ... |
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