动量

This paper first analyses the stress acting on the cable by means of tiny segment analytical methods, establishes cable's stress equation, and finds out the relation between the tethered aerostat's position and its stress acting by cable; then, based on the momentum and moment of momentum theorem, the longitudinal nonlinear dynamic equation is established; Finally a numerical simulation of dynamic responses of the balloon and cable to gust are carried out.

本文首先通过微段分析法对缆绳进行受力分析，建立缆绳的受力方程，找出了系留气球在空中的位置同系留气球所受缆绳拉力的关系；然后根据动量和动量矩定理建立了球体的纵向非线性运动方程；最后通过数值仿真计算，对系留气球的纵向动态响应特性进行了分析。

A continuous equation, three momentum equations are set up for each phase, and the algebraic equation with sum of volume rate amount to one is set up in this model.

该模型针对每一相都建立了一个连续性方程、三个动量方程，并建立了一个体积率和等于1的代数方程。

Descartes created analytic geometry, and discovered an early form of the law of conservation of momentum.

笛卡尔创立了解析几何，发现了动量守恒定律的早期形式。

Through the analytical solutions of momentum differential equation for a stream with varying mass, a general characteristic parameter , depending on structure scale and flow parameter, is introduced.

在径向流体分布器的变质量动量方程理论模型的基础上，通过对模型解析解的分析，获得了包括径向分布器结构尺寸和流动参数的特征参数k／C。

The calculations show that the approximation for the birefringence and the rotatory property of interaction material leads to an error in the optimum incident angle for TeO2 more than 10%, a diviation in fa-λ0 relation from experiment results, and make the spectral resolution and angular aperture of the device to be degrade.

结果指出，在该波长下，对晶体双折射取近似表达式和不计入晶体的旋光特性，对光波最佳入射角θi的选取(在θi小于60°的范围内)，将引入大于10%的误差，这个误差由于涉及到是否满足动量匹配条件，因此会对器件的性能有直接的影响。

From the homogeneity of time we can deduce mechanical energy conservation law, and from the homogeneity and isotrogy of space we can deduce monentum conservation law and angular momentum conservation law.

从时间的均匀性可推得机械能守恒定律，从空间的均匀性和空间的各向同性可分别推出动量守恒定律和角动量守恒定律。

In motions of rotation angular momentum appears in much the same way as linear momentum appears in motion of translation.

在旋转运动中的角动量产生的方式与平移运动中的线动量的产生是基本相似的。

In motions of rotation angular momentum appears in abundance the alike way as linear momentum appears in motion of translation.

在旋转运动中的角动量产生的办法与平移运动中的线动量的产生是基本功相似的。

Consider a uniform magnetic field parallel to the tube axis, and it changes the angular momentum from to .

在奈米碳管的管轴方向外加与管轴平行的磁场，会对角动量造成影响，由原本的不连续值改变为连续值的。

Mechanical properties of light like linear and angular momentum allow for the trapping, rotation and manipulation of microscopic objects.

线动量和角动量的机械特性有诱捕，旋转和对细微颗粒的操作。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。