[KongchangAI]
Unverified78% confidenceFactTime unknown

判断密封性能可现场测试:抽真空后按压盒盖中央的真空指示按钮,若按钮凹陷不弹起说明负压维持良好,凸起或松动则密封失效,多数带指示钮设计的产品即基于此原理

1
Sources
78%
Confidence
Long-term
Relevance
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First Seen

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get_claim(id=432223)