查询词典 geometric

Some geometric data of ellipse in hyperbolic space are considered,such as set inclusion,arc length,geodesic curvature,curvature,area and total curvature .

在双曲空间中，考察椭圆的包含关系，对弧长元素、测地曲率、曲率、面积及全曲率等几何量做出细致考察。

The computer software is worked out to calculate numerically the geometric drive properties: normal curvature, geodesic curvature, induced normal curvature, induced geodesic curvature, lubrication angle, contact line and meshing area, etc.

本文首次建立了在双自由度运动状态下，用直线型切刀包络加工圆柱蜗杆传动的啮合原理数学模型；并编制了相应的计算机软件，对其几何传动特性：法曲。。。

The two kinds of symmetries in holonomic and non-holonom-ic mechanical systems,i.e.symmetries of differential equations of motion(ab-breviated as SDEM)and symmetries of Noether-type,and interrela-tions among all kinds of symmetries are investigated.The necessary and suffi-cient conditions of SNT to be SDEM are found out.It is pointed out thatSDEM have distinct geometric properties which are equivalent to the geodesiccharacteristic of differential equations of motion and geodesic deviation.

文中研究了完整与非完整力学系统的两类对称性，即运动微分方程的对称性和Noether型对称性，以及各种对称性之间的相互关系，确定了Noether型对称性为运动微分方程对称性的充分必要条件，并指出运动微分方程的对称性具有明确的几何性质，即它等价于运动微分方程的测地性质以及测地偏离性质。

Based on the theory of gearing and differential geometry, a series of geometric relationships between conjugate tooth surfaces are analyzed, basic relationships of normal curvature as well as geodesic torsion between conjugate tooth surfaces are derived mathematically for the most general form of gearing.

基于微分几何和齿轮啮合理论，分析了共轭啮合齿面间的一系列几何关系，从而揭示了两个作空间共轭啮合运动的齿面之间的法曲率、短程挠率的内在几何联系。作为上述理论的具体应用，研究了准双曲面齿轮传动两齿面之间在给定参考点处的法曲率、短程挠率的关系

Based on the theory of gearing and differential geometry, a series of geometric relationships between conjugate tooth surfaces are analyzed, basic relationships of normal curvature as well as geodesic torsion between conjugate tooth surfaces are derived mathematically for the most general form of gearing .

作为上述理论的具体应用，研究了准双曲面齿轮传动两齿面之间在给定参考点处的法曲率、短程挠率的关系。

We selected the geometric and geodesic active contour model of Caselles as our researching objects in next steps .

在诸多改进的数学模型中，选取了Caselles等人的几何活动轮廓模型和测地线活动轮廓模型作为我们进一步研究的对象。

By the new learner which causes The Geometer's Sketchpad can in the short time grasp The Geometer's Sketchpad the application, and can use The Geometer's Sketchpad to make the beautiful geometric figure, and some pleasant animation effect.

以使几何画板的初学者能在短时间内掌握几何画板的应用，并能用几何画板作出美丽的几何图形，及一些令人赏心悦目的动画效果。

At the same time , the innovation of this paper is to work out the three kinds of pricing formulas of barrier options of the geometric average assets .

同时，本文的创新之处是将上式三个障碍期权的定价公式推广到资产几何平均情况下时的期权定价公式。

This paper gives a closed-form solution to Asian option with geometric average assets prices in a continuous situation.

采用几何平均法计算资产价格的平均值，并以连续时间的情形为例，得到了亚式期权的解析定价公式

Thus, the expected-return projection corresponded to a geometric average return.

Dr.eye：因此，期望返回的投射符合一几何学平均返回。

In contrast to the ubiquitous rising-sun-with-rays military flag of the Japanese, Chinese banners and ensigns feature a range of designs.

与遍地都是的太阳军旗不同，中国人的旗帜和徽章设计得各式各样。

From their small corner of Feng's Guangzhou headquarters -- a jumble of pink leashes, squeezable rubber steaks, and plastic doggy Santas for Fido's stocking -- Soleil's designers come up with at least five new products a month.

从Feng 设在广州总部的产品展示柜台上可以看到，Soleil的设计师每月至少设计出5件新产品。