topping point是顶点的意思,是一种统称,1. from the top point 从顶点 the pendulum is usually measured from the top point to the middle of the bob .称底部的重物叫摆锤(摆的长度一般从顶点到摆锤中间来计算)。2. top point 顶部点 01.中心点 Central Point 02.顶部点 Top Point 03.黄金点 Golden Point.3. top dead point 出气阀 intake valve 上止点 top dead point 下止点 bottom dead point