vector sum factor of safety
矢量和安全系数
a vector that is the sum of two or more other vectors
两个或两个以上向量相加得到的向量
The operation of finding the sum of two vectors is called vector addition.
求两个向量和的运算, 叫做向量的加法。
So, we want to decompose the position vector into a sum of simpler vectors.
故我们是把位置向量,分解为简单向量的和。
The vector sum of the angular momentums of each component particle of an extended body.
动量矩伸展体的每个组成微粒的角动量的矢量值。
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