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The -n switch is used when you want explicitly to print out data.
当您想显式打印数据时，使用-n开关。
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It is provided with L and N double-break switch and power indicator lamp.
零、火线双断开关设计，配有电源指示灯。
youdao
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It is provided with L and N double-break switch and power indicator lamp.
零、火线双断开关设计，配有电源指示灯。
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