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华德液压泵的机械性能大比拼、 北京华德北京北仪兴源涛机电设备有限公司，主要生产<A style="FONT-WEIGHT: 400; FONT-SIZE: 12px; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(100,100,100); TEXT-INDENT: 0px; FONT-STYLE: normal; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-DECORATION: none; WIDOWS: 2; ORPHANS: 2; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px" href="http://m.859823.cn/index.html" target=_blank>华德</A><A style="FONT-WEIGHT: 400; FONT-SIZE: 12px; WORD-SPACING: 0px; TEXT-TRANSFORM: none; COLOR: rgb(100,100,100); TEXT-INDENT: 0px; FONT-STYLE: normal; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); TEXT-DECORATION: none; WIDOWS: 2; ORPHANS: 2; font-variant-ligatures: normal; font-variant-caps: normal; webkit-text-stroke-width: 0px" href="http://m.859823.cn/index.html" target=_blank>液压泵</A><SPAN style="DISPLAY: inline! 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具有相应的配油机构，将吸油区与压油区分开。 密闭容积增大到时，先要与吸油腔隔开，然后转为排油；密闭容积减小到时，先要与排油腔隔开，然后转为吸油，即两腔之间要由一段密封段或用配油装置（如盘配油、轴配油或阀配油）将两者隔开。未被隔开或隔开得不好而出现压、吸油腔相通时，则会因吸油和压油腔相通而无法实现容腔由小变大或由大变小的容积变化（相互抵消变化量），这样在吸油腔便形不成一定的真空度，从而吸不上油，在压油腔也就无油液输出了。
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