求翻译：然而，由于自由曲面关于最小主曲率方向的几何不对称性， 与 之间大多数情况下只有一个切触点，因此需要在上述旋转过程中由 确定的每一个位置使 绕 顺时针或逆时针旋转角度 来进行调整，以使最小主曲率方向两侧的最大干涉量相同。是什么意思？

However, due to the free surface on the direction of minimum principal curvature geometric asymmetry, and between most cases, only a tangential contact in the rotation from a position determined to make around clockwise or counterclockwise rotation angle to be adjusted so that the minimum principal

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However, because free curved surface about smallest principal direction of curvature geometry dissymmetry, with between majority situations in only then a point of osculation, therefore needs to cause in the above revolving process by the definite each position to circle clockwise or the countercloc

However, due to the free surface on geometric asymmetry of the minimum principal curvature direction, between and in most cases only a single point of contact, therefore need to be in the rotation process by determining in every location around the angle clockwise or counterclockwise to adjust so th

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