A、上升时间tr
B、调整时间ts
C、幅值穿越频率<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1517795235882226eb96e15434aa9a5c4a86691a96b99image70.png"/>
D、相位穿越频率<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1517795235957337328f0856849afbc0b78a3c894966fimage71.png"/>