- 更多网络例句与曲线的二重点相关的网络例句 [注：此内容来源于网络，仅供参考]
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The algorithm of segment rational quadratic B-spline interpolation to algebraic curve is discussed in details.
重点讨论了代数曲线参数化的分段有理二次B样条插值算法。
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On the generation principles of the special double point of coupler curve,the paper analyzed double point of the coupler curve.
从连杆曲线特殊二重点的产生机理出发，研究具有实二重点轨迹特征的连杆点位置。
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Based on the example of turbine reverse engineering , the general procedure that can be used to translate the physical object into CAD datum by Surfacer software is determined in this paper1 By going deep into the vector of point-cloud , it's parametrization can be gained by adopting the precept of accumulating chordal parametrization1 According to the principle of const ructing curve using the least square method , the high quality-curve can be gained by modifying curve's parameter1 This paper also empha2sizes on some methods about processing point-cloud , const ructing curve and const ructing surface1 And it can provide several methods to const ruct high quality2CAD model for mould machining1
此栏目为免费论文，可自行复制获取，如需要其他完整论文，可点击论文范文查找摘要本文就涡轮反求造型的实例，采用Surfacer 软件规划出由实物转化为工程CAD 资料的一般流程。在深入分析点云数据的矢量方向基础上，采用积累弦长参数化方案实现点云的参数化；根据最小二乘法曲线拟合原理，修改曲线参数获得高品质曲线；并重点论述了点云处理、曲线生成、建构曲面的方法，为模具加工提供了建构高品质CAD 模型的有效途径。
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This paper discusses singularities, inflection points and convexity of FB-spline curves in terms of their control polygons, and gives the necessary and sufficient conditions for testing when FB-spline curves have one or two inflection points, or a cusp, or a loop, or none of the above points by the envelope theory and the topological mapping method.
文章利用包络理论和拓扑映射的方法，讨论了FB-样条曲线的奇拐点和曲线性质，并给出了依据控制多边形判断FB-样条曲线出现1个或2个拐点、1个尖点、1个二重点以及处处为凸的充分必要条件；最后给出了FB-样条曲线的奇点、拐点以及二重点在λ-μ平面上的分布图。
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Theory; the spatial meshing theory includes comparative motion, comparative differential and conjugative curved surface; and the application of meshing theory includes gear drive and worm drive. The spatial meshing theory is the main part of the course.
课程的重点讲解内容有曲线的参数方程、切线、法面、弧长、曲率、空间曲线的基本公式、挠率及平面曲线的基本公式等；曲面第一和第二基本公式，法曲率、主方向和主曲率、欧拉公式、短程挠率、欧拉公式和贝特朗公式推广、相对法曲率和相对短程挠率等；刚体的绝对和相对运动速度、相对微分和绝对微分、相对速度和相对微分、轨迹曲面的法曲率和短程挠率等；空间共轭曲面的啮合条件、诱导法曲率、两类界限点、等距共轭曲面、空间啮合的二次接触原理等；蜗杆传动的数学模型建立及啮合特性分析方法等。
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The design of the dry-dock falling gate"s structure is researched, and integrates the disquisitions and analysis on the dynamic characteristics about dock gate, in order to make the cabin design more visualizing.(2) The emphasis of this paper is the influence of the water hole and gas hole in the tidal cabin and the influence of the drain of the air-operated cabin.(3) In this paper, the building method of the dry-dock falling gate"s parametric model is studied and the dynamic analysis is accomplished in ADAMS, furthermore, the rising-and-falling angle curve is drawn while the dry dock gate is rising and falling.(4) The paper is based on the apprehension of the past theories and researches about air-operated dry-dock falling gate, and is explicated by hydraulic rationales and rising-and-falling mechanical principles. This software is developed by inner programming language in ADAMS and VC. This design could shorten design cycle.
1研究了气控式干船坞卧倒门的结构设计，整合对卧倒门在海水中运动中的动力特性研究，使卧倒门的设计，特别使其舱格设计更具可视化；(2)重点讨论潮汐舱水孔气孔对卧倒门水上运动的影响，空气操作舱充排水对卧倒门运动的影响；(3)研究了气控式干船坞卧倒门仿真模型的参数化方法和过程，并在ADAMS中完成了系统的动力学分析，绘制出了卧倒门在起卧过程中的运动特性曲线；(4)通过对已有的气控式干船坞卧倒门的实验成果和成形理论的解读，在理解其起浮和卧倒机理基础上，应用VC和ADAMS二次开发语言进行设计软件开发，定制了友好的用户化中文人机交互界面，使设计人员可以方便快捷地对卧倒门门进行设计开发，缩短了设计周期。
- 更多网络解释与曲线的二重点相关的网络解释 [注：此内容来源于网络，仅供参考]
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double point of curve：曲线的二重点
double point 重点 | double point of curve 曲线的二重点 | double poisson distribution 二重泊松分布
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double point：重点
double plane 二重面 | double point 重点 | double point of curve 曲线的二重点
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double poisson distribution：二重泊松分布
double point of curve 曲线的二重点 | double poisson distribution 二重泊松分布 | double product 二重积