The coordinate frame called map is a world fixed frame, with its Z-axis pointing upwards.
该map坐标系是一个世界固定坐标系，其Z轴指向上方。
The dynamic equations of flexible spacecraft are derived by introducing a moving coordinate frame.
首先建立了采用任意浮动参考系时的柔性航天器动力学方程；
Each point is used to generate a feature vector that describes the local image region sampled relative to its scale-space coordinate frame.
每一个点产生一个特征向量来描述关于其尺度空间坐标系的局部区域采样。
Each point is used to generate a feature vector that describes the local image region sampled relative to its scale-space coordinate frame.
每一个点产生一个特征向量来描述关于其尺度空间坐标系的局部区域采样。
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