发布时间:2025-02-04 22:01:26
开关不带电合闸时,用万用表电阻档测量空气开关对应的输入、输出端,电阻为零;开关不带电分闸时,用万用表电阻档测量空气开关对应的输入、输出端,电阻接近于无穷大。那就说明空气开关是好的。
soundlink mini蓝牙音响恢复出厂值设置的图文教程
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