自己编的制作红色小球沿一条带封闭路径的下旋螺线运动的实时动画。-their series produced a small red ball with a closed along the path under the rotating spiral movements of real-time animation.

环形天线的仿真与设计分析，以及一些具体螺旋天线的仿真分析-Loop antenna simulation and design analysis, and the simulation analysis of some concrete spiral antenna