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2019-06-03View Original

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user
Reply #22019-06-04
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Reply #32019-06-04
user
Reply #42019-06-04
```json
Reply #52019-06-04
["离心泵出口要加大小头 变大吗?"
Reply #62019-06-04
,"离心泵出口要加大小头 变大吗? 设计院给的流程图是泵出口管线为DN40 �而买回来的的泵出口是DN from5 必须要在泵的出口加大小头DN from5→DN40吗? 所有的泵都存在这个问题 变与不变 关系到很多管管和阀门的大小 除了成本 是否s会有其它影响呢?"
Reply #72019-06-04
,"很多工况、介质。不宜流速过快。"
Reply #82019-08-27
,"管径变大 流速变慢 压力变高 损失变小"

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