动力学的

The great English scientist Newton(1643~1727) published the book Mathematical Principles of Natural Philosophy in 1687. It sums up all his studies and brings forward the three fundamental laws of mechanics, the law of universal gravitation and the laws at celestial mechanics.

英国伟大科学家牛顿(1643~1727)在1687年版的《自然哲学的数学原理》一书总其大成，提出动力学的三个基本定律，万有引力定律，天体力学等。

Above all results are of significance in order to study stability and control on coaxial helicopter in future.

在直升机动力学的研究中，准静态假设是一种有效的研究方法，在直升机的分析

There are many external factors effecting on absolute gravimetry,among which,the air resistance and Coriolis force have scarcely been discussed.

高精度绝对重力观测已广泛应用于大地测量、地球物理与地球动力学的研究中，而许多外界因素对它有不可忽略的影响，其中空气阻力和科里奥利力的影响在地学界很少讨论。

V-shape grooves exist in twinned crystal planes of fivefold twin. As for thermodynamics and kinetics, the grooves are helpful for diamond grains of fivefold twin to grow.

正二十面体和正十面体颗粒都是"五重孪晶"结构，在颗粒表面上与五重孪晶面对应的区域形成V-形槽，这种V-形槽对五重孪晶金刚石颗粒的长大有热力学和动力学的有利作用。

The curriculum comprises the fundamental concepts of point set topology, differential manifold and differential dynamics, followed by the conceptions and theoretical methods of abrupt change, bifurcation, chaos and fractal. The analysis and compare combined with the practice in power system make it easy for readers to learn the basic methods of nonlinear dynamics and write high quality papers.

本课程主要内容包括点集拓扑学、微分流形和微分动力系统的基本概念，后面部分主要涉及到突变与分叉、混沌、分形和分维概念和理论方法，并结合电力系统实际例子加以分析与比较，使读者很快掌握非线性动力学的基本方法，能够写出高质量的文章和学术论文。

Distance and dihedral angle constraints are used in distance-geometry and molecular dynamics computations to calculate and refine these structures.

他们将距离和二面角的约束效应运用在距离几何学和分子动力学的计算中使其对分子结构的测定更为精确。

And the drift velocity and the average energy of electron in air are computed. The results obtained in this work will be of great importance to the research of discharges in atmosphere including dielectric barrier discharge at atmospheric pressure.

通过模拟在大气常温下O_2、N_2及O_2／N_2的直流放电过程，所得结果对进一步了解大气常温下直流放电动力学的机理具有重要意义，对大气常温下介质阻挡放电研究也具有一定的参考价值。

Based on this relation, it is possible not only to obtain the principle of virtual work and the reciprocal theorem in dyn...

然后从该式出发，不仅可以得到有孔隙的耦合热弹性体动力学的虚功原理和互等定理，而且能系统地导出成互补关系的11类变量、9类交量、6类变量及3类变量简化Gurtin型变分原理。

Based on the linear elastodynamics theory, an analytical model is established for the propagation of generalized Rayleigh waves in a coated structure. Moreover, the dispersion equation is derived from the wave motion equations and the boundary conditions.

基于弹性动力学的线性理论，建立了涂层材料中广义瑞利波传播的理论分析模型，并且由波动方程和边界条件推导了波的频散方程。

The results of dynamic absorption in the organs after incorporation of 3H-TdR showed that 3H-TdR in the peripheral blood was swiftly distributed to other organs and to their peaks in Id, and was scavenged from them quickly, the formulae of incorporation pattern were described as exponential equation.

3H-TdR内污染组织器官生物动力学的研究显示，进入血液的~3H-TdR可迅速分布于各组织器官，1天内吸收达高峰，然后迅速排除，拟合的滞留曲线回归方程为指数函数方程。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐