查询词典 parabolic curve

Based on the analysis of the characteristics of the compensation directions for boundary curve s in rapid prototyping direct slicing, a new method, which can determinate the compensation direction by converting the boundary curve to beeline polygon,is proposed.

在分析快速成型制造中直接切片真实边界曲线补偿方向特点的基础上，提出了一种将曲线边界转化为直线多边形进行补偿方向判定的方法，并阐述了该判定方法的几何意义。

Besides common geometric measurements such as distances and angles,a new measurement of average curvature energy defined for boundary curve segment is included in the set to describe curve feature.

除了常见的几何测量外，提出了一种平均曲率能量的测量方法来描述边界曲线特征。

On the basis of study on hydrates phase equilibrium and the GHSZ affecting factors, the potential planar distribution of gas hydrates is determined by studying the temperature and pressure conditions in the sea bottom with different water depth, and the thickness of GHSZ is attained by solving the hydrates phase boundary curve equation and geothermal gradient curve equation.

在充分研究水合物相平衡和水合物稳定带影响因素基础上，通过建立水深和海底温度的关系，确定了不同气体成分和孔隙水盐度情况下，水合物稳定带在南海的分布范围，并根据水合物相平衡曲线方程和温度-深度方程计算了水合物稳定带的厚度。

Anticipate in the color and the noodles up, spread trend according to this year, chose to return protactinium to return true green to be fond of colourful noodles to anticipate;Design in the style up, use to turn province, ground plait, curve to highlight the female's beautiful curve, pass to put together to connect, the dissymmetry, bowknot, satin bring exceedingly fascinating and charming of expressing the modern youth young girl, can then strengthen the function of the clothing by the function of transformation length.

在色彩和面料上，是根据今年流行趋势，选择了返镤归真的绿色迷彩面料；在款式设计上，用转省、碎褶，弧线来凸显女性的曲线美，通过拼接、不对称、蝴蝶结、缎带来表现现代青春少女的风情万种，可以变换长短的功能性则增强了服装的实用性。

A representative RC frame of the main building of Tsinghua University is analyzed by FIPOA-3D, the structure capacity curve with descending branch is obtained, the seismic requirement curve is derived from current code. Capacity spectral method is utilized to evaluate the seismic resistant behavior of the frame.

用FIPOA-3D计算了清华大学主楼一榀典型的RC框架，得到有下降段的结构能力曲线，由现行规范的反应谱曲线得到结构的地震要求曲线，并用能力谱法对这榀框架的抗震能力进行了评估。

During curve tracking, entering recognition status if comes across intersection, the algorithm makes accurate prediction of curve direction through branch match of welltrained Hopfield network, in combination with width match.

在曲线跟踪的过程中，当遇到交叉点，就进入交叉线识别，通过训练好的网络进行分支匹配，再结合宽度匹配正确判断曲线走向。

And studied the method of application of network calculus to resource reservation.Based on network calculus,derived the effective bandwidth constrained by end-to-end delay and equivalent capacity for a given buffer size.Analyzed network performances such as maximum delay and queueing buffer length,gave the arrival curve and service curve.

深入研究了网络演算在网络资源预留中的应用方法，推导出了基于端到端时延约束的有效带宽和基于缓冲区长度约束的等效容量计算公式，分析了给定到达曲线和服务曲线条件下网络性能的计算方法。

Regular Fractal Dimension Calculation is discussed by using Koch Curve and Cantor Ternary Set.Additivity of regular fractal dimension is discussed by continuation of Koch Curve with line and Cantor Ternary Set in vertical direction.CircumferenceArea,Variation,Grid and Radius methods of calculation statistical fractal dimension are introduced.

本文以科赫曲线与康托尔三分点集为例，讨论了有规分形维数的计算；以科赫曲线在垂直方向的两种拓展为例，讨论了有规分形维数的加和性；以周长—面积法、变量法、网络法与半径法为例，介绍了无规分形维数的计算方法。

Show model combines growth model, math model and VR technologies to design the proper object structure of each organ of virtual plant. First of all,research background, research content of virtual plant area and Virtual Reality technology are introduced. The concept of VR and research content of virtual plant are defined. Secondly, we analyze math model of virtual plant, including Bezier curve, NURBS curved surface, fractal system, L-system and Catenary curve. Thirdly, we give show model of virtual plant in detail. Finally, the design of the platform and growth model on XML script is introduced , and how to show the virtual plant in the platfrom is discussed too.

本文首先介绍了虚拟植物领域的研究背景、研究内容和虚拟现实技术，明确了虚拟现实的概念和虚拟植物的研究范畴，然后介绍了虚拟植物器官的数学模型，对各个器官展开了拓扑结构分析，建立有针对性的数学模型，先后介绍了Bezier曲线，NURBS曲面，分形系统，L-系统和悬链线曲线，接着详细分类介绍了虚拟植物器官的显示模型，最后介绍了虚拟作物平台的设计，平台中基于XML脚本的生长模型，以及虚拟作物在作物平台中的显示。

Based on the curve estimate of sap flow characteristic of Quercus acutissima using manifold curve model, the simulation curvilinear equation of environmental factors to sap flow were founded, but the availability of these equations differed each other.

基于对多种曲线模型对麻栎液流特征进行曲线估计，分别建立了各环境因子的模拟曲线方程，方程的有效性存在差异。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48