In so far as linear motion is concerned, a body is in equilibrium if the vector sum of the forces acting upon it is zero.
就线性运动而论，如果作用于严格物体上的诸力的矢量之和是零，那么这个物体就处于平衡状态。
Any two vectors whose vector sum equals a given vector are called the components of that vector.
假如任意两个矢量的和等于一个给定的矢量，这两个矢量就称为该给定矢量的分量。
In an infinite dimensional space there always exist two subspaces whose vector sum is different from their span.
在一无限空间中恒存在两个子空间，其矢量和与其张成空间不同。
The change in the momentum of a system of particles during an impact is equal to the vector sum of all the external impulses acting on the system.
碰撞时质点系动量的改变等于作用在质点系上所有外碰撞冲量的矢量和。
Based on the fact that forces are vectors, the key problems of the vector sum method are the state of real stress distribution and potential sliding direction of slopes.
矢量和分析方法是基于力是矢量这一基本概念的分析方法，其关键在于确定边坡真实应力分布状态及整体下滑趋势方向。
High resolution range profile(HRRP) is the projection vector sum of target scattering point echoes acquired by wide-band radar along the direction of radar line-of-sight(LOS).
高分辨距离像（HRRP）是宽带雷达获取的目标散射点子回波沿雷达视线方向的投影矢量和。
High resolution range profile(HRRP) is the projection vector sum of target scattering point echoes acquired by wide-band radar along the direction of radar line-of-sight(LOS).
高分辨距离像（HRRP）是宽带雷达获取的目标散射点子回波沿雷达视线方向的投影矢量和。
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