通过控制研磨参数，使得磨具磨损均匀，从而保证磨具面形精度。
This method is to control lapping parameters, make lapping tool wear well distributedly and thus assures lapping tool surface accuracy.
大口径望远镜主镜的面形精度是影响望远镜成像质量的关键因素之一。
The surface figure precision of the primary mirror in a large aperture telescope is a key factor influencing the imaging quality.
在此基础上，通过施加力或位移进行多点调节，找到合理的调节方法，使面形精度达到要求。
On this basis, force or displacement load is exerted to find a reasonable adjusting method, in the way the surface figure requirement can be met.
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