UID:167802
UID:150200
UID:236342
UID:119126
UID:232894
UID:275058
UID:306489
janiusxw: h[)aRo 好像给出的公式有点问题 .6A:t?. R=b*b/a VX@G}3Ck k=-(a*a-b*b)/(a*a) "+JwS 前面要带符号 g.sV$.T2K