Readings clearly show the powerful voltage based on the standard price of samples around a whole range of periods of the basic 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 di?n c?a c