The rows and columns select frequencies from the low and high frequency group respectively.

这些行和列分别从低音频组和高音频组中选择频率.频率的准确值见下面表3.

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So the high frequency group pulse electrochemical machining ( HGPECM ) was put forward according to the model.

针对脉冲电化学加工,建立了反向电流和压力波的数学模型,提出了高频群脉冲电化学加工方法.

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