Velocity formula and acceleration formula of point in the plane graph is proved by means of complex vector,and a simple method to obtain the velocity and acceleration is proposed.是什么意思_Velocity formula and acceleration formula of point in the plane graph is proved by means of complex vector,and a simple method to obtain the velocity and acceleration is proposed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句