对“位移-时间图像”(x-t图像)的描述在不同版本的教科书中说法差不多,这里我引用教育科学出版社必修1第一章第6节中的说法“:为了画出物体做直线运动时位移随时间变化的图像,可建立一个直角坐标系,横坐标表示时间t,纵坐标表示位移x,在t时刻物体相对于t=0时刻的位移为x,在坐标平面上用点标出不同时刻对应的位移值,并用平滑的连接各点,形成的图线就是位 The description of ”displacement-time image “ (xt image) is more or less the same in different versions of textbooks. Here I quote Education Science Press 1: Chapter 1, Chapter 6, saying: ”To draw objects Linear motion displacement of the image over time, you can establish a rectangular coordinate system, abscissa that time t, ordinate displacement x, t at the moment relative to t = 0 at the moment of displacement x, the point in the coordinate plane Marked at different times corresponding to the displacement value, and smooth connection points, the formation of the line is bit