国家地区选择下拉框插件

python基础课程；python是一种计算机编程语言。作为一种面向对象的动态类型化语言，它最初被设计用来编写自动脚本（shell）。随着版本的更新和新语言功能的增加，它越来越多地被用于独立的大型项目的开发中。(Python Basic Course; Python is a computer programming language. As an object-oriented dynamic typed language, it was originally designed to write automated scripts (shells). With the updating of versions and the addition of new language functions, it is increasingly used in the development of independent, large-scale projects.)

编程流量老师团队官网培训python基础代码分(Python Basic Code Sharing in Programming Traffic Team Official Website Training)

说明：  在PFC中根据颗粒级配生成颗粒，进行细观模拟(Generate particles according to particle grading)

raycast仿3d场景实例，gba平台，使用arm-gcc或armsdt编译-raycast imitation 3d scenes example, DS platform, the use of arm-gcc compiler or armsdt

说明：  用BP算法仿真成像，点目标成像，精确重建图像。(BP algorithm is used to simulate imaging, point target imaging, and accurate reconstruction of images.)

Looking for a long time to find C# to read DWG CAD File information methods, the use of a dynamic library OpenDWG of DWGdirect_NET_3_02 method that can read DWG files perfect information

Flash 5 作品，展现漂亮的魔界的魔花！编程做到的景象就是比较奇妙。 此源码作为学习研究用-works its way beautiful display of the magic flower! Programming is done more intriguing picture. This source used as a study and research

简化ArcGIS图层的搜索，查找，获取数据等等操作，提高开发效率(Simplify the ArcGIS layer search, search, access to data and so on, improve the development efficiency)

说明：  spss相关数据文件， 以供平时练习使用。 400份关于学生与父母沟通情况的调查问卷。((SPSS related data files, For the usual practice.))

利用ansys进行球壳的建模，可以用来模拟液体储罐的大型工业结构的分析计算(Ansys modeled using a spherical shell, can be used to simulate large-scale industrial structure analysis and calculation of liquid storage tanks.)