Readings show the productive voltage dependant on the common price of samples in excess of an entire amount of periods of the fundamental frequencyCa?ch ?ô?i ve? tru?ng th???ng x? s? mi?n Nam an toa?n nhâ?t chi?nh la? b?n hãy mang t?? ve? sô? ?o? ?ê?n t?i tru? s?? cu?a nha? ?a?i có ghi trên t? vé s? ho??c ca?c v?n pho?ng chi nha?nh, ban ??i