查询词典 geometric

Boolean operation of non-regular precise geometric models .

非正则精确模型的布尔操作。

It mainly includes the following aspects: It summaries the characteristics of various kinds of calculatingmethods systematically, such as diameter error method, roundness errorand cylindricity error and establishes geometric parameter measurementpattern of the borings, which is fit for the computer on-line automaticprocessing.

针对测量机研制的需要，论文研究了缸孔几何参数的在线测量方法和数学模型、专用传感器设计、测量的信号处理、测量精度的实现以及测量系统的设计等理论与关键技术问题。

This researchcombines the latest achievements of computer technology withmeasurement technology, in order to develop a special on-line measuringmachine, which has functions such as processing and transform of highprecision signals; digital processing and calculation; logic judgment andfault diagnosis and automatic operation, so that the geometric parametersof the four engine borings can be measured simultaneously at one station.Therefore, with efficient detection, group assembly of borings andcylinders can be realized.

该测量机的功能是实现在线同时测量内燃机四个缸孔直径、圆度、圆柱度、位置度等几何参数，并通过计算机控制自动采集测量信息、自动处理高精度信号和数据处理，且具有逻辑判断与故障诊断、自动化操作等能力，从而提高检测量效率，真正实现缸孔、缸套的成组装配。

Constructing triangle surface which interpolates the boundary curve and cross-boundary slopes on a triangle is the basic problem in computer aided geometric design, computer graphics and so on.

在三角形域上构造对边界曲线和跨界导数插值的三角曲面是计算机辅助几何设计和计算机图形学等领域中的基本问题。

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。

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

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，幷阐述了该判定方法的几何意义。

For instance, we look for a domain which minimizes or maximizes a given eigenvalue of the Laplace operator with various boundary conditions and various geometric constraints.

例如，我们寻找一块领土，用各种各样的边界条件和各种各样的几何学限制条件减到最小或者使Laplace 操作者的规定的eigenvalue最大化。

Under the assumption that the constrained set is bounded and nonempty , we discussed the geometric properties of the feasible set for MFBLP model and Optimality conditions of MFBLP .

在约束集为非空有界的前提下讨论了可行集的几何性质，得到了可行集为约束集的若干个面的并，可行集为弱拟凸集等一些较好的几何性质。

Some six decades later when Kepler tackled the motion of Mars, he proposed a number of geometric models, checking his results against the position of the planet as recorded by his boss, Tycho Brahe, a Danish astronomer.

在60年后，开普勒在研究火星的运行诡计时，他假设了大量的几何学上的模型。

A review of studies on the mechanical properties and microscopic geometric models of three dimensional braided composites is given in this paper.

对三维编织复合材料的细观结构几何模型和力学性能的研究进展进行了综述。

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