The existing algorithms include equivalent left and right curve Angle by definition, normal section line method and tangent projection etc.
有关的算法有根据定义的左右曲面角相等，法截面法和切向投影等。
It has found that section dimension deviations yield with normal distribution; axis line deviations yield with lognormal distribution.
混凝土截面尺寸偏差服从正态分布，轴线位移偏差服从对数正态分布。
If the normal section in the center of the tooth line is taken as a tooth measuring and design section, when spline hob is designed in a plane meshing, the tooth profile error is minimum.
如果以齿纹中点法剖面作为齿形检测和设计剖面，用平面啮合法设计花键滚刀时，则齿形误差最小。
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