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發(fā)布時(shí)間: 2012-11-8 10:29
正文摘要:1.止推軸承 2.平衡孔或平衡管 平衡孔法是在葉輪上開洞;平衡管法是將排出端漏人葉輪后密封環(huán)之內(nèi)的液體用平衡管引回葉輪吸人口;平衡管法不僅同樣可達(dá)到平衡軸向推力的目的,同時(shí)不致使水力效 ... |
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