例句與造句

1. An optimizing arithmetic for calculating the best - fit sphere is also proposed , the result shows better accuracy is reached comparing to " three points method " , from 107 . 8umrms to 25 . 66umrms . during interferometric optics test with null lens , " nonlinear errors " of the testing coordinates will be introduced . a method based on ray - tracing , nonlinear fitting and coordinate transferring is proposed to eliminate these errors
   在ccos控制模型及理論計算方面，提出了一種適用于高次離軸非球面最接近球面計算的優(yōu)化算法，經(jīng)計算，某矩形離軸非球面最接近球面半徑的求解精度較傳統(tǒng)的“三點法”有了較大的提高，理論加工余量由原來的107 . 8umrms降低到25 . 66umrms ；提出一種基于磨頭與工件的相對位移量的控制模型，并且開發(fā)了阻尼卷積迭代算法，引入“虛擬加工”的概念進行迭代求解和參數(shù)評價。
2. It's difficult to find null lens in a sentence. 用null lens造句挺難的