DF33XX保护装置技术资料（线路、变压器、电容器、断路器、电动机、备自投等）。包含：说明书、原理图(AutoCAD格式)-DF33XX protection device technical information (lines, transformers, capacitors, circuit breakers, motors, prepared from the cast, etc.). Include: manual, schematic diagram (AutoCAD format

CAD中画中心线的插件，方便快捷-To draw the center line In autocad

用AUTO CAD、天正电气软件绘制的照明平面、照明系统和供配电系统图。-With AUTOCAD, Tengen software to draw electrical lighting plane, lighting and power supply system in FIG.

AutoCAD的宏文件，计算大圆内能画多少小圆，并画出来-draw circle in circle by acad