UID:167802
UID:150200
UID:236342
UID:119126
UID:232894
UID:275058
UID:306489
janiusxw: C$Hl`>?$ 好像给出的公式有点问题 i32_ZB Z?y R=b*b/a Ot8S'cB1,$ k=-(a*a-b*b)/(a*a) }tS6Z:fOY 前面要带符号 t,r&SrC