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- The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces. 作者证实：单叶双曲面和双曲抛物面是直线曲面。
- The ruled surfaces were used to approximate the freeform surface of blade,attention was focused on the 5-axis plunge milling of blisk's tunnel. 针对整体叶盘等复杂结构件,从锻造毛坯到最终零件加工成形,需要切除大量的多余材料的问题,提出了一种开式整体叶盘通道的五坐标插铣粗加工方法。
- method of coils with ruled surfaces 可控表面线圈法
- A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies. 摘要在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。
- British colonies were ruled by governors. 英国的殖民地由总督统治。
- The Ruled Surfaces in Pseudo-Euclidean Space and Euclidean Space 伪欧氏空间与欧氏空间中的直纹面
- This article not only discusses the ruled surface features of uniparted hyperboloid and its application in archtecture engineering but also discusses the teaching of the ruled surface. 本文主要讨论了单叶双曲面的直纹性,指出它在建筑工程中的应用,并对直纹面的教学作了探讨。
- Two new methods are presented for machining ruled surfaces.By means of adjusting the changing rate of straight generatrix, the first method can reform a general ruled surface into a developable one. 提出了2种加工直纹面的新方法．其中第1种方法通过调整直纹面上母线方向的变化规律，使之成为可展面，以便在加工中获得无脊棱的光滑曲面；
- According to the thickness of the blade, variable distance offset curves of the shroud camber line and hub camber line were acquired, then the blade surface can be expressed by ruled surface. 按照叶片的厚度做盖盘曲线和轴盘曲线的变距偏置曲线,得到叶片曲面的直纹化表达式;
- Asphalt is used for making road surfaces. 沥青常用于铺路。
- Charles ruled England for 11 years. 查理一世统治英国11年。
- The motor noise ruled out conversation. 发动机的噪音使谈话无法进行。
- The Normans ruled England by right of conquest. 诺曼人征服了英格兰成了统治者。
- Don't allow yourself to be ruled by emotion. 不要感情用事。
- The Ching court began to feel its rule threatened. 清廷开始感到自己的统治受到了威胁。
- Flies' feet stick to surfaces by suction. 苍蝇的脚借吸力可附着于物体表面上。
- But this does not rule out unofficial discussions. 但这并不排除进行非正式的讨论。
- The rule is inapplicable to this occasion. 那规则对这一场合不适用。
- The queen ruled her country for 20 years. 这位女王统治了她的国家二十年。
- The country is ruled by a leftist government. 这个国家由一个急进派的政府统治。
