查询词典 geometry

Today, at 23, he has published over 100 academic papers in fields as diverse as computational geometry, combinatorial game theory, data structures and graph theory. Along with his interest in folding, Dr. Demaine is also an expert in algorithms.

今日二十三岁的他，已出版了超过一百份学术报告分别在多种不同的领域如计算几何学、组合博弈论、资料结构以及图论，他除了对摺纸感兴趣，迪铭博士也是位演算法专家。

Robertson J L%Thompson N P%Wilson L W Combinatorial solid geometry target description standards AD-A306858 , 1996,null

朱文和%赵有守%李向东球形破片侵彻有限厚靶板的模型建立与计算弹道学报， 1997，3

The effect mechanism of the combustion chamber geometry is analyzed.

探讨了燃烧室几何形状影响燃烧性能的作用机理。

The effects of combustion chamber geometry on the performance of the diesel engine were studied.

对直喷式柴油机来说，这两方面性能的高低与其燃烧过程的进行密切相关。

The geometry of the combustion chamber and the atomisation of the fuel play a decisive role here.

燃烧室的几何特点和燃油的雾化扮演决定性的角色。

A curve coordinate system was used to simulate cold flow in a typical geometry combustor.

采用曲线坐标，对一个典型的燃气轮机燃烧室的冷态流动进行了数值计算，得到的结果定性合理。

The idea that the space-time coordinates do not commutate is old. But noncommutative geometry cannot attract the physicists interest for a long time.

时空坐标非对易的思想已经有好久了，但是长期以来，非对易几何并未在物理上受到人们广泛关注。

They include the fundamental concepts of jet bundle geometry needed in describing time-dependent mechanical systems, decomposition of jet bundles into a direct sum according to the constraints, horizontal distributions on constraint mainifolds, the global formulation of D'Alembert-Lagrange's equations and Chaplygin's equations, and nonholonomic mechanics on a Riemann-Cartan manifold. Meanwhile, the geometric significance of Chetaev's conditions and $\rd$-$\delta$ commutation relation are discussed in depth.

本文主要综述非完整约束系统几何动力学的外附型和内禀型Lagrange理论，包括非定常力学系统所需要的射丛几何学的基本概念、射丛按约束的直和分解、约束流形上的水平分布、 D'Alembert-Lagrange方程与Chaplygin方程的整体描述、以及Riemann-Cartan流形上的非完整力学，文中对Chetaev条件和d-δ交换关系的几何意义作了深入讨论。

Other semirings arise naturally in such diverse areas of mathematics as combinatorics, functional analysis, topology, graph theory, Euclidean geometry, probability theory, commutative and noncommutative ring theory, optimization theory, discrete event dynamical systems, automata theory, formal language theory and the mathematical modeling of quantum physics and parallel computation systems.

在许多不同的数学领域存在着其它形式的半环，比如组合学，泛函分析，拓扑学，图论，欧式几何，概率论，交换和非交换环，优化论，离散动力系统，自动化理论，形式语言理论，量子物理的数据模型和并行计算系统。

Based on the traffic flow theory and the elements of projective transform in descriptive geometry, the key to the changepoint recognition was analyzed by the complanation of dualistic linear regression.

依据交通流理论，结合画法几何中投影变换原理，以二元线性回归平面化研究为例，对变点辨识的关键问题进行了分析。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。