This paper presents a design scheme of a digital multi meter for measuring periodical signals.

提出了一种以测量周期性信号有效值为基本功能的数字式多用表的设计方案。

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We put the sales of good digital multi meter measurement engine embedded in the 3 Slot mainframe box.

我们把销售良好数字多用表测量引擎嵌入在3槽主机箱中。

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The internal automatic range digital multi meter directly measure 11 kinds of different functions, without the need of expensive external signal adjustment.

内部的自动量程数字多用表直接测量11种不同功能，而无需昂贵的外部信号调整。

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