例句與造句

1. In the fourth part we study conditions of shen metric to be berwlad , douglas , protectively flat or to be of zero curvature
   第四部分討論shen度量成為berwald度量， douglas度量，射影平坦以及具有零曲率的條件。
2. Presents a new method of constructing boundary conditions for nurbs interpolotion , which makes it unnecessary to know the deriratives of curve ends , and solves the problem of zero curvature at curve ends , and enables designers to control the shape of the two end segments of curve easily and freely by simply adjusting the curvature coefficients and discusses the influences of curvature coeffients on the shape of the end segments of curve
   提出一種新的用于nurbs曲線插值的構(gòu)造邊界條件的方法.該方法不需要已知曲線端點(diǎn)的切矢，并且解決了端點(diǎn)曲率為零的問(wèn)題;它使得設(shè)計(jì)者可以通過(guò)簡(jiǎn)單地調(diào)整首末端點(diǎn)曲率參數(shù)便可以隨意地且很容易地控制曲線首末兩段曲線的形狀.最后還討論了曲率參數(shù)的取值對(duì)曲線端部形狀的影響
3. It's difficult to find zero curvature in a sentence. 用zero curvature造句挺難的