常見例句雙語例句On the area of actual process, It is often seen that one surface of the part is quadric surface.在實(shí)際生產(chǎn)中，如果某一加工表面是二次曲面，對于這類曲面輪廓的加工常采用數(shù)控加工方法。http://chazidian.comFor a given three screws, this paper, using the theory of quadric surface, finds the hyperboloid which is defined by the three given screws.本文使用二次曲面的化簡理論，對于給定的三根螺旋，求出由它們確定的單葉雙曲。In this paper, we introduce the formula for circular cross section of quadric surface, correct a mistake in historical documents, and expand the achievement created by our predecessors.介紹了二次曲面的圓截線平面公式，糾正以前文獻(xiàn)中的一個錯誤，并將前人的成果擴(kuò)大。 返回 quadric surface