["Ich habe 2 2 Membrpumpen gekau 2 个，一个可以空抽，一个需要先灌水才能抽",,"Was ist eigentlich der Unterschied? Meisterer er eine Erkl 1ung bitte!","Dieses Thema wurde zuletzt von ylbch 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 pérdida 1 1 8 1 1 8- 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 编辑原来应该是一样的，差别就是能力的问题。假设单向阀被卡涩或关不严，怎么抽气体也排不净，那就会导致抽空也不量量。或者是背压偏高也导致不量（打不动）","Die Versiegelung ist schlecht，用用用用清水，干净的纸张擦一擦，最好用专门的清洁用用"

2018-08-26View Original

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原理上有什么区别？大神解释一下

Reply #22018-08-26

本帖最后由 ylb913 于 2018-8-26 14:10 编辑原理应该是一样的，差别就是能力的问题。假设单向阀被卡涩或关不严，怎么抽气体也排不净，那就会导致抽空不上量。或者是背压偏高也会导致不上量（打不动）。

Reply #32018-08-26

密封不好，用清水，干净的纸张擦一擦，最好用专门的清洁用纸

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