通过顶点的连通关系和几何关系是获取图的结构信息的主要方法。
The principal method of gathering graph structured information is throughout the adjacent relationship and geometry relationship.
网络模型：地物被抽象为链，节点等对象，同时要注意其连通关系。
Network model: geographical objects have been abstracted by chain and node etc. , pay attention to the connective relationship among them.
根据网络通信模拟器的要求和工作原理，提出了用开关矩阵函数模拟网络的连通关系以及在相关链路上模拟信道误码的新方法。
Based on the principle and requirements of the NCS, a new scheme that USES the on off matrix function to represent the network topology and bit error rate of each link is presented.
根据网络通信模拟器的要求和工作原理，提出了用开关矩阵函数模拟网络的连通关系以及在相关链路上模拟信道误码的新方法。
Based on the principle and requirements of the NCS, a new scheme that USES the on off matrix function to represent the network topology and bit error rate of each link is presented.
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