关于：relrec_s1, relsend_s1, relrec_s2, relsend_s2，relrec_s3, relsend_s3

[yyc3215]

c12_1 = self.j2p_1(x_s1_1, x_s2_1, relrec_s1, relsend_s1, relrec_s2, relsend_s2)
r12_1 = self.p2j_1(x_s2_1, x_s1_1, relrec_s2, relsend_s2, relrec_s1, relsend_s1)
c23_1 = self.p2b_1(x_s2_1, x_s3_1, relrec_s2, relsend_s2, relrec_s3, relsend_s3)
r23_1 = self.b2p_1(x_s3_1, x_s2_1, relrec_s3, relsend_s3, relrec_s2, relsend_s2)
传入的relrec_s1, relsend_s1, relrec_s2, relsend_s2，relrec_s3, relsend_s3分别表示什么啊？