自由矢量是通常意义上的矢量，平移前后的自由矢量被认为是等价的。即平行且相等的自由矢量可认为相同。而固定矢量是一种束缚矢量，改变位置的固定矢量不再认为相等。
固定矢量
双语例句原声例句
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简言之，矢量数据利用最简单的拓扑实体—点、线和多边形，并在二维笛卡尔坐标系统中固定它们来描述地理特征。
In short, vector data take the simplest topological entities — points, lines, and polygons — and anchor them within a 2-d Cartesian coordinate system to describe geographical features.
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对没有固定基准的自由网，位移矢量是真实位移的有偏估值，有时精度最高的地方发现变形能力并非最强。
The displacement vector is biased estimated values, and sometimes, the area where the measuring accuracy is the highest could not have the best ability to detect the deformation.
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通过对这些方案的分析，提出了固定合成矢量及其改进型的三电平直接转矩控制方法。
By analyzing those strategies, the fixed and improved synthesizing vectors for DTC control method fed by three-level inverters are proposed.
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er is not a fixed vector.
r 不是一个固定矢量
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$firstVoiceSent
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