动量

Based on the laws of energy conservation and momentum conservation, the mass-speed equation is derived through Lorentz transformation .

从能量守恒和动量守恒出发，通过洛仑兹变换，推出了质量-速率关系式。

This is called the 1aw of conservation of momentum .

这称为动量守恒定律。

Take advantage of利用: He made the famous experiment by taking the advantage of law of conservation of momentum.

他利用动量首恒定律完成了那个著名的实验

The principle of conservation of momentum holds whatever the nature of the internal forces, conservative or not.

动量守恒原理则不管内力的性质如何都能适用。

40In this chapter we develop the implications of momentum conservation in the motion of a collection of particles.

本章将揭示群质点运动时动量守恒的含义。

On the basis of momentum conservation this paper focuses on the study of flow mechanism of the header and its flow static pressure distribution.

本文在动量守恒的基础上，研究汇流集箱的流动机理和集箱流体静压分析，锅炉汇流集箱流动的基本规律和设计参数。

The equation of conservation of momentum is changed into a quadratic equation of a certain physical quantity.

将动量守恒方程变成一个物理变量的二次方程。

Based on the quality of conservation, conservation of momentum and energy conservation principle, three-dimensional steady hydraulic mathematical model and its boundary conditions have been deduced out

基于质量守恒、动量守恒和能量守恒原理，建立天然气管道三维稳态水力计算的数学模型，并给出了模型的边界条件

In this thesis, a semi-classical model of the force on an atom is used to describe the motion of a two-level atom interacting with a standing wave laser field. The velocity dependent force and momentum diffusion are derived through optical Bloch equations by using the matrix form of the continued fraction technique. By investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom.

本文利用半经典理论，从二能级原子在激光驻波场中所满足的运动方程出发，推导出密度矩阵元所满足的递推关系，利用矩阵连分数方法求解出密度矩阵元，从而求出依赖于原子运动速度的光压力与动量扩散系数，通过讨论原子在激光场中的动力学行为，为原子在激光场中被囚禁、形成原子列阵以及可控制的量子态，从而为量子信息处理提供理论基础。

The velocity field was established by introducing the continuity equation into momentum equation.

采用罚有限元法将连续性方程引入到动量方程，获得了速度场分布。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。