说明： 一些从ansys中输出数据（结构节点信息、拓扑关系，面积，荷载等）的apdl小程序
对于需要提取一个结构的这些信息用于其它程序语言编程，很好用，特别是对于复杂的结构 (some Filed output from the data (information structure nodes, topology, area, load) 7.0-9.0 small extraction procedures need for a structure of such information for other procedural programming language. useful, especially for complex structure)
