Principle: Readings exhibit the effective voltage based upon the common value of samples more than a whole quantity of intervals of the elemental frequency H?i ngh? l?n th? nh?t n?m 2022 c?a ??ng b? công ty TNHH MTV X? s? ki?n thi?t Kon TumPerfect for industrial electrical and electro-mechanical gear troubleshooting and maintenance applications.B