Parallelogram rule for addition of vectors An early plot plan for a new War Department headquarters, with its irregular pentagon shape. 向量加法之平行四边形法则这是五角大楼最初的设计图纸,当时还被设计为不规则的五边形。
The main results gained in this dissertation are as follows: 1. The vector theory which originates from parallelogram rule of velocity and force is inspected in detail. 较深入地考察了起源于力和速度的平行四边形法则的向量理论。
The vector aforementioned follows the parallelogram rule; therefore, the composition of moral vector produced on account of it is still a vector. 矢量作用遵循的是平行四边形法则,得到的道德矢量和仍然是一个矢量。