发布时间:2025-02-06 18:58:07
水是形成水幕密封的关键之所在,水环式真空泵没有水形成水幕,就没有负压。由于摩擦产生很高的热量,损坏叶轮(转子),所以没有没有水循环是不行的。希望能帮到您!
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2025-02-06 18:58:07建筑给水排水设计规范中雨水设计径流系数的取值范围是如何规定的
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