dynamics和kinetics有什么区别

dynamics的意思比kinetics要广很多，以下是dynamics的释义，只有第一义项下两者可以通用。
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1）(used with a sing. verb)The branch of mechanics that is concerned with the effects of forces on the motion of a body or system of bodies, especially of forces that do not originate within the system itself.Also called kinetics
（与单数动词连用）动力学：机械学的分支，有关各种力量在运动体或运动体系统上的作用，尤指非系统本身产生的力也作 kinetics

2）(used with a pl. verb)The forces and motions that characterize a system:
（与复数动词连用）动态：可代表这种系统的各种力或其运动：
The dynamics of ocean waves are complex.
海浪的运动是复杂的

3）(used with a pl. verb)The social, intellectual, or moral forces that produce activity and change in a given sphere:
（与复数动词连用）社会力量：社会的、理智的或道德的力量，它在一定范围内产生运动与变化：
The dynamics of international trade have influenced our business decisions on this matter.
国际贸易的动态影响了我们对此所作的商务决定

4）(used with a pl. verb)Variation in force or intensity, especially in musical sound:
（与复数动词连用）力度变化：力度上的变化，尤指音乐中：
“The conductor tended to overpower her with aggressive dynamics”(Thor Eckert, Jr.)
“指挥打算用过分的力度变化压倒她”(小索尔·埃卡特)

5）(used with a sing. verb)Psychodynamics.
（与单数动词连用）精神动力学

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在语言学中，kinetics有一个意思是dynamics没有的，那就是“体态学”，主要研究的是肢体语言。

◆这两个词汇的确不太容易区别，所以我建议你试从他们的应用例句中找到答案：

This model is based on the molecular dynamics and chemical kinetics, etc.
此模型是基于【分子动力学】、【化学反应热力学】理论分析之上的。

In this dissertation, the kinetics and dynamics models of the cleaning robot were studied.
对全方位移动半自主控制清扫机器人的【运动学】和【动力学】模型进行了研究。

The coupling of fluid dynamics and chemical kinetics results in a variety ofcomplex phenomena.
【流体动力学】与【化学反应动力学】的耦合产生了各种复杂的物理现象。

Kinetics is a concept only involved with the movement of objects, while
dynamics focuses on the forces and their effects. In certain point of
view, we can say kinetics only deals with the motions of objects, and
dynamics with the reason why and how they moves.
转自http://wiki.answers.com/Q/What_is_difference_between_dynamics_and_kinetics?#slide=4