UID:167802
UID:150200
UID:236342
UID:119126
UID:232894
UID:275058
UID:306489
janiusxw: Hf]}OvT>Z 好像给出的公式有点问题 LYT<o FE- R=b*b/a cZ2, u,4 k=-(a*a-b*b)/(a*a) b6$A@b 前面要带符号 WoG