SolidWorks 钣金与焊接实战精解CD里面用到的工程文件，这个是第一章的，如果有需要我会继续上传后续章节的。里面的内容主要是一个气弹簧的实例。-The project file used by SolidWorks sheet metal and welding combat Precision Solution CD inside, this is the first chapter, and if necessary I will continue to upload subseque