Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.

为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。

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In a second sub-mode ('low output power sub-mode'), VOUT is regulated using pulse width modulation, but the converter switching frequency is fixed at a first frequency.

在第二子模式（“低输出功率子模式”）中，使用脉冲宽度调制来调节VOUT，但转换器开关频率固定在第一频率。

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RF power modulation is used to control the codeposition and the selective silicon removal steps with the later proceeds whenever the RF power is turned off or reduced to a low level.

使用RF功率调变控制该共沉积作用及该选择性硅去除步骤，后者步骤总是在关闭该R F功率或是将其降至低水准时进行。

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