当输入电压高于机器过压点的设置，机器立即关闭，然后红灯闪烁。
When the input voltage is higher than the overvoltage set point of the machine, the machine immediately shut down, and then red light flashes.
这种方式有两大缺点，一是高电压产生高辐射，二是容易产生闪烁使视力退化。
There are two major shortcomings in this way, one high-voltage high radiation, and the other is prone to flicker so that deterioration of eyesight.
这种方式有两大缺点，一是高电压产生高辐射，二是容易产生闪烁使视力退化。
There are two major shortcomings in this way, one high-voltage high radiation, and the other is prone to flicker so that deterioration of eyesight.
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