• 2022-06-15
    17d625100987f5a.png图示开环[img=264x163]17d6251014f7dd2.png[/img]Nyquist曲线的穿越次数为( )
    A: N+ =1,N-= 0
    B: N+ =1,N-= 1
    C: N+ =0,N-= 0
    D: N+ =0,N-= 1