mo+vb，二次开发，读取矢量数据，放大、缩小、鹰眼、平移和完整的图层管理，由图到属性查询和由属性到地图的查询。-mo+ vb, secondary development, read the vector data, zoom, Eagle Eye, translation and the complete layer management, from the map to the property to the map queries and inquiries from the prope

编译原理的课程设计。题目为“WHILE循环语句的翻译程序设计（LL（1）法、输出四元式）”。创新之处在于，可以翻译多层循环语句（理论上是无限的，示例为4层while循环语句）-Compiler theory of curriculum design. Entitled " the WHILE loop statement translation program design (LL (1) method, output quaternion type). The innovation l