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建构肾脏线及其渐屈线。Construct the nephroid and its evolute.

然后他讨论了平面曲线的渐屈线。He then treated the evolute of a plane curve.

Other words in sentence

技术创新是一个复杂的系统，而这个系统总是从低级向高级进化的。Technological innovation is a complicated system, and this system always evolute from inferior to upper.

提出实体参数化逆向造型设计的方法，介绍应用该方法开发圆锥齿轮三维实体参数化造型设计系统的过程。Process of parametric modeling of bevel gear with standard evolute tooth on PC based CAD system is presented.

这一时代的巨人很有可能是下一时代的矮子，因为时代在变。The giants in this generation is very possibly becoming the shortsin the next generation, since the times evolute.

并由所建立的方程进行了蜗线齿轮及其共轭齿轮的渐屈线及齿形的图形仿真，为新式齿轮的开发应用提供了理论依据。Based on above, the graphics simulation of the evolute and tooth are finished, which provides theory basis for this new kind of gears.

据确凿无疑的出土的及传世的文物，中国船舶的舵是由桨演变而来的。Rudders used in China's vessels did evolute from oars according to the undoubted excavated cultural relics and the relics handed down from ancient times.

Other words in sentence

当点沿曲线移动时，相应的曲率中心的轨迹曲线称为曲线的渐屈线，而曲线称为曲线的渐伸线。When the point moves along the plane curve , the trace curve of the point is called the evolute of the curve , denoted by, and is called the involute of the curve.

给出了三类圆锥曲线的渐屈线方程，介绍了圆锥曲线顶点处的曲率中心和曲率圆的规尺作图方法。The paper explains three types of evolute of cone curve, and introduces curvature center on top of cone curve and drawing way with compasses and ruler of curvature circle.

刑罚作为对犯罪的反应，其不仅因文化而创立，更因文化的发展、变迁和进化而历经嬗变，刑罚轻缓化的直接动因是文化的演进。Penalty as a reaction to crime, was created because of culture, and was evolute because of cultural development and evolution, and the reprieve of penalty is the direct impetus to cultural progress.

当点沿曲线移动时，相应的曲率中心的轨迹曲线称为曲线的渐屈线，而曲线称为曲线的渐伸线。Denote the center of Curvature at by. When the point moves along the plane curve, the trace curve of the point is called the evolute of the curve, denoted by, and is called the involute of the curve.