Unverified90% confidenceDecision RuleTime unknown
真正防潮防氧的密封罐应采用硅胶圈+卡扣式或螺旋+硅胶双密封结构，倒扣装水静置10秒不渗漏才算合格；单纯塑料盖旋盖无胶圈的仅能防尘不能防潮
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