Gi?i m?i (bao g?m t?t c? gi?i nào có s? thay ??i, c?p nh?t m?i ho?c ?i?u ch?nh)Theory: Readings show the helpful voltage dependant on the average value of samples around an entire number of intervals of the elemental frequencyPerfect for industrial electrical and electro-mechanical machines troubleshooting and servicing apps.Th?ng kê t? ??ng c