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防水测试机如何检测电话手表气密性
以下是科学角度的分步解释: 1. 测试原理:压力差与气体泄漏 核心理论:利用理想气体状态方程(PV = nRTPV=nRT),在密闭系统中,若温度(TT)和体积(VV)恒定,气体压力(PP)的变化可直接反映气体分子数(nn)的变化,即泄漏量。 测试方法: 压降法 ...
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