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发表于 2005-9-18 16:41:20 | 显示全部楼层 |阅读模式
<>I wonder how the number of the node  is defined in the figure III in Part II? For instance,  It seems that there are three highways at the node 3 if we consider the number as the degree in graph theory.  If not,  there are two at node 3. Similarly, there are 4 highways in node 4. But 2 in the latter estimation. </P>
<>If the former is right, how the situation of node 1 is considered.  Two highways are not connected to the nodes mentioned in the map.  Furthermore, one of them is very short. Does it cout as one? </P>
<>If the latter is rational, all the nodes are connected to two highways. It is obvious not appropriate.      </P>
<P>Thank,   </P>
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