... 扭率半径；挠率半径 radius of torsion 向径 radius vector 记数根；根值；基数；语根 radix ...
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最小向径 minimum radius
法向径节 [机] Normal diametral pitch
中点法向径节 Mean normal diameter pitch
迫导向径向转向架 forced-steering radial truck
自导向径向转向架 self-steering radial truck ; self-steering radial bogie
轴向径节 Axial diametral pitch
地心向径 geocentric radius vector
径向模糊 Radia Bur ; Radiou Blur ; Zoom Blur
径向基核函数 radial basis function ; Radial basis ; radial basis kernel function ; RBF
以弯矩矢量和转角向径为工具，分析了薄壁构件的弯扭屈曲。
Making use of the moment vector and radius vector of rotation, the lateral buckling of thin-walled members are analyzed.
数值结果表明：用本方法测轨，向径、垂迹方向误差小于0.1米，沿迹方向误差小于1米。
The numerical results show that the errors in radius and across-track are less than 0.1 m, and that in along-track less than 1 m.
这种方法可直接获得向径、轨道速度等参数随时间或极角（绕地心的转动角）的变化，便于分析轨道转移与逃逸运动，有助于飞行使命与运动轨迹的设计。
Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory.
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