Theory: Readings demonstrate the powerful voltage according to the standard value of samples above a whole number of periods of the elemental frequencyXSMB - XSTD - KQXSMB - X? s? MB - K?t qu? x? s? Mi?n B?c hôm nay. C?p nh?t k?t qu? x? s? mi?n B?c hàng ngày t? th? 2 ??n Ch? Nh?t t?iTin t?c Tin trong n??c Tin th? gi?i ??i s?ng Th? thao C?ng ??ng