UID:167802
UID:150200
UID:236342
UID:119126
UID:232894
UID:275058
UID:306489
janiusxw: j'SGZnsy* 好像给出的公式有点问题 D<^K7tJui R=b*b/a hi ),PfAV k=-(a*a-b*b)/(a*a) GRgpy 前面要带符号 r)dXcus