The voltage effective value was figured out by mean square.
再通过其均方计算出电压有效值。
Therefore, the offset voltage should be measured periodically for the most effective offset correction.
因此，为了获得最有效的偏移修正效果，应该定期测量偏移电压。
The7years 'applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances.
7年的使用实践表明，直流脉动电压频率调制技术对抑制声谐振现象十分有效。
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