本文通过计算机软件定量作图和理论证明相结合的方法,个人研究与QQ群研相促进的方式,发现了粗糙斜面的“等时弧”和“等速锥”的特征及相互联系。研究得到的结论有趣,研究的方式和方法对中学教师有一定的启发性。 In this paper, by means of a combination of quantitative mapping of computer software and theoretical proof, the way of personal research and QQ group research phase, the characters of “equi-arc” and “constant velocity cone” contact. The conclusion drawn by the study is interesting. The research methods and methods are of some enlightenment to middle school teachers.