As the frequency of the AC component increases, the DC meter response decreases, until at some frequency only the average input voltage will be displayed.
当交流分量的频率增加时，直流仪表的响应就会变得不够快，直到在某一频率时，仪表只能显示出输入电压的平均值。
Demonstrating Electric Meter, Model J0403 has 14 ranges. It can serve as current detector in the experiment demonstration, measurement of micro current. DC voltage and DC resistance.
J 0403型高中演示电表共有十四档量程，供教学演示实验中作检流计，测量微小电流，测量直流电压、直流电阻。
An inspecting method was introduced for the DC static high voltage meter and the analysis for its uncertain-ty was given out.
文章介绍一种检定直流高压静电电压表的方法，并对其进行不确定度分析。
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