查询词典 enumerative geometry

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。

The major purpose of this research is to design a 915MHz RFID tag antenna base on unique features of fractal geometry and complex conjugate matching concept.

摘要 本论文研究的目的，在於利用碎型特殊的特性，来设计工作在915MHz的共轭匹配RFID天线。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的