It is possible to compare a waveform of 1 phase using a waveform of A different phase or Look at that has a Beforehand calculated waveform on the same examination point. Page 69: CommunicationTheo nh? th?ng kê t? s? vé phát hành trong m?t ngày thì t? l? ?? th?ng ???c gi?i ??c ??c c?a x? s? ki?n thi?t s? r?i vào kho?ng one:one.??i th? chính