H?i ??ng x? s? ki?n thi?t mi?n B?c bao g?m 28 ??n v? thành viên, trong ?ó có six ??n v? t? ch?c quay s? chính th?c và c? ??nh hàng tu?n c? th? nh? sau:You can Examine a waveform of one stage that has a waveform of An additional stage or compare which has a Beforehand measured waveform on a similar take a look at stage. Web page 69: Communica