答案是地球运动的动力学，顺便说一下，这也是导致冰河时代的原因。
The answer is the dynamics of earth's motions, the same thing that caused the Ice Age by the way.
任何严肃的教育理论都涵盖两个部分：对生活目标的理解和心理动力学的知识，即精神运动的规律。
Any serious educational theory must consist of two parts: a conception of the ends of life, and a science of psychological dynamics, i.e., of the laws of mental change.
现代运动用滑翔机的机翼长而细薄，拥有最佳的空气动力学效率，其升阻比达到50：1。
A modern sports glider, with long, slender wings, is the most aerodynamically efficient aircraft, with a lift-to-drag ratio of around 50:1.
摘要：机器人动力学是对机器人机构的力和运动之间关系与平衡进行研究的学科。
Abstract: for the robot dynamics is to study the relation between the force and movement and balance of the subject.
它与经典动力学“力改变运动”的概念合并，将获得宇宙运行自洽的科学原理，而无需“第一推动力”的假设。
It with classic dynamics "force change the movement" of concept, will merge the self-consistent universe scientific principle, without the hypothesis of "the First Driver".
将铰接式车辆简化成六自由度的动力学系统，建立了能反映率体平面运动和横向摆动的动态数学模型。
In this paper, the articulated vehicle is simplified to a six-free-degree system in dynamics, and a dynamic mathematical model was derived and established.
该方法采用动力学模型对车辆运动进行描述，考虑了车体运动与车轮速率、转向角之间的关系，比用线性模型更符合车辆实际行驶时的复杂运动状况。
For the mobile case, a dynamic model of the vehicle motion, which takes account of the relationship between the rigid body motion of vehicle and the steering and drive rates of wheels, is adopted.
该计划是为模拟的运动学和动力学的平面和空间机械系统。
The program is intended for simulation of kinematics and dynamics of planar and spatial mechanical systems.
在此基础上分析了操作臂的运动学和静力学关系，建立了并联柔性系统的动力学模型。
Then, the kinematics and statics of the manipulator are studied, and a dynamic model of this parallel flexible system is established.
本文通过对包含运动学和动力学特征的新型CAD模型理论与应用的研究，预示了该理论和方法有很大的发展潜力和广阔的应用前景。
This thesis researches on the theory and application of the new CAD model having kinematics and dynamics feature, which also indicates its great development potential and widely application future.
首先，目前在卫星动力学中常用的所有人造卫星运动方程的数值解法有待改进的最重要的问题就是稳定性问题。
First, now in all common numerical methods for the satellite dynamics equations the most important problem that needs to be improved is stability problem.
作用在任意运动物体（系）上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。
The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.
分析结果表明刀具路径几何特性对机床的运动学和动力学特性有很大的影响。
The result shows there are great influences of geometrical properties of cutter path on the kinematics and dynamics of a machine tool.
在赤脚和戴支架差别最大的是踝关节的运动学和动力学。
The barefoot and braced conditions differed most significantly in terms of ankle kinematics and kinetics.
挟沙水流的运动规律是泥沙运动力学中最基本、最重要的研究课题之一。
The mechanics of sediment-laden flow has been one of the most important subjects in hydraulics and river dynamics.
在运动功能相对较好的脑瘫患儿铰链和动态的支撑同样有效改善踝关节的运动学和动力学。
The hinged and dynamic braces were equally effective for improving ankle kinematics and kinetics in these relatively highly functioning children with cerebral palsy.
基于改善动力学性能、提高输出运动的平稳性，实现了六杆双输出函数脉冲发生机构按传动比要求的等价四杆机构的综合原理与方法。
To control and improve the properties of mechanism dynamics, a synthetical parameter model of high-grade motion was created for three-grade functional generator mechanism with double output.
运用变质量系统的基本原理，建立轴流脱粒过程中谷物运动的非线性动力学模型。
Based on the principle of a varied mass system, the non linear mathematical model of the crop mechanics for an axial threshing process was set up.
所提出的方法和思路同样适用于其它空间机构动力学和运动学的研究。
The presented method and thought can also be used in dynamic and kinematic study of other spatial mechanisms.
本文讨论了作典型共轭运动的刚体的动力学问题。
This paper studies the dynamic problem of systems with typical conjugate motions.
利用三角函数作为一种近似方法，对单摆的动力学方程进行了简化，给出了大角度条件下单摆运动的周期的近似公式。
As an approximate method, with the trigonometric function, the simple pendulum dynamical equation is simplified, and the approximate formula for the period of simple pendulum movement is presented.
目的人体动力学稳定区域是人体运动平衡的重要评价指标之一，它对疾病的诊断、康复具有重要意义。
Objective Dynamic stability region is one of the most important criteria for balance of human locomotion, which is significant for illness diagnosis and rehabilitation.
在求解动力学系统的方程中，动力学系统的第一积分与积分不变量是求解运动方程积分理论的重要内容之一。
The first integration and integrated invariant of dynamic system belongs to important contents of solving equations of motion integrated theory during solving equations in dynamic system.
结果表明，椎间盘参数对于颈部的整体刚度和动力学响应有较大的影响，颈部肌肉对于颈部运动起了稳定的作用。
The results show that the property of disks has great effect on the biomechanical response of the neck and the muscle has a contribution to the stability of neck motion.
通过分析导线的受力，得到了导线运动的一般动力学方程。
Through the load analysis of the conducting wire, general dynamics equation of wire motion is obtained.
机械系统的运动学与动力学包括刚体的平面移动。
Kinematics and dynamics of mechanical systems including rigid bodies in plane motion.
为了向交通事故再现提供新的依据，研究了动量冲量法与多体动力学法结合的乘员运动仿真，提出了两类算法的耦合方法。
In order to provide new proof for accident reconstruction, the method of occupant kinematics reconstruction using the coupling of momentum-based method and multi-body dynamics method was studied.
流体动力学，研究流体的运动，是可以写成许多卷书的一门学科。
Hydrodynamics, the study of fluids in motion, is a subject about which multi-volume textbooks have been written.
求涡旋运动解的动力学的基础是湍流速度涨落方程。
The dynamical basis of vortex motion solution is the set of equations of turbulent velocity fluctuation.
推导了硅微机械振动轮陀螺仪的动力学方程，给出了它的运动规律，分析了载体绕空间任意轴匀速旋转时干扰力矩所引起的漂移率。
This paper gives the dynamic equations of vibratory wheel silicon micromechanical gyroscope and their motion law, analyses drifts of the gyroscope, when vehicle rotates around any axis uniformly.
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