本子程序根据所给的支路导纳及有关信息,形成结点--导纳矩阵,如打印参数K=1,则输出电导矩阵G和电纳矩B -Procedures based on the book of the slip road to the admittance and related information, the formation of node** admittance matrix, such as print parameters K = 1, the output conductance matrix G