Remember that was the vector field that looked like a rotation at the unit speed.

我们记得，这是个以单位速度旋转的向量场。

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Based on the unit quaternion decomposition of rotation matrix, this paper puts forward an algorithm to estimate motion parameters from the space position vectors of 3d feature points.

本文基于旋转矩阵单位四元数分解定理，提出一种由3 D特征点空间位置估计运动参数的算法。

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In a lossless unit, any change from a polarization state to another polarization state is pointed out to be corresponded to a rotation of Poincare sphere relative to the diameter.

指出在一个无损耗单元内，从一个偏振态到另一个偏振态的任何变化，都对应着庞加莱球相对于直径的一个旋转。

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Because the payload is much less massive than the control unit, the centre of rotation is close to the control unit.

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At any given rotation 40 to 60 percent of a unit will be new and so they have to train them.

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