该渐变被四个作用点控制，作用点的位置和颜色可以通过位置和颜色参数的变化制作动画。
The gradient is defined by four effect points, the positions and colors of which can be animated using the Positions & Colors controls.
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。
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.
它主要解决物体所受摩擦力，分离点位置以及其他相关的流体动力学参数预报问题。
It mainly solves the questions of the friction, location of the separating and the forecast of dynamics parameter.
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