Because voice is carried out through TDM network, it belongs to the category of circuIt'switch.

目前语音基本还是通过TDM网络来承载, 这属于电路交换范畴.

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The rushes of simulation show that the soft - switch circuIt'switch off in zero voltage.

软开关逆变电源是目前焊接电源研究的热点,移相式零电压逆变电路就是其中之一.

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