Cách t?i application 123B B??c 1: B?t ??u b?ng vi?c m? trình duy?t trên ?i?n tho?i ho?c máy tính b?ng c?a b?n. ?i?n ??a ch? trang World wide web chính th?c vào thanh ??a ch?.You could Examine a waveform of one stage which has a waveform of One more period or compare which has a Earlier measured waveform on exactly the same take a look at sta