旋转因子生成余弦交流信号过程。体现旋转因子向量在转动过程中，实轴投影随时间改变生成余弦波。-presents the process that rotation factor circumvolves to generate cosin signal.

华中科技大学期刊分类目录（A－D类）-2008年版，其中详细列出了SCI期刊的最新影像因子，是顶尖级论文发表时必须参考的宝贵资料。-Huazhong University of Science Journal Categories (A-D class)-2,008 edition, detailing the latest images of the SCI journals factor, is a top-notch paper published must take into consi