You are able to Look at a waveform of one period which has a waveform of another phase or Evaluate by using a Earlier calculated waveform on the identical test place. Site sixty nine: Interaction- T?t c? các thông tin ??u ???c ch?n l?c k? l??ng và t?ng h?p t? nh?ng ngu?n tin c?y nh?t.Th? thao S?n sàng cho gi?i ?ua t?c ?? cao trên bi?n l?n ??u