N ports network的用法和样例：
例句
- Based on multi-port network theory and Norton equivalence theorem, this paper presents a new multiterminal HVDC power flow method.
以多端口网络理论和诺顿等值定理为基础，提出了一种新的电力系统多端直流潮流算法。 - If reciprocity and symmetry exist for passive two port networks of linear time invariant under zero intial condition,the circuit parameters will have some important characters.
对于线性非时变的无源二端口网络，在零初始条件下，若存在互易性及对称性，则其电路参数具有一定的特殊性。
