Outside the circle are two circles with multiplying incremental diameters, representing constant expansion of our business.

外由两个直径等倍递增的圆组成，象征着我们的事业不断扩散；

youdao

This is how you get the rules for adding a vector to another vector, then taking a vector and multiplying it by some constant.

以上这些就是矢量加法的法则,以及数乘矢量的法则

耶鲁公开课 - 基础物理课程节选