Unverified88% confidenceDecision RuleTime unknown
阀门优先选择双向自动止逆阀（含硅胶密封垫圈），比单向阀漏气率低，抽真空后48小时回弹率＜10%；单纯依赖手压封条的老式阀门1周内基本回弹变鼓
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88%
Confidence
Long-term
Relevance
-
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