查询词典 momentum

Angular momentum: The vector product of the position vector and the linear momentum of a particle .

角动量：的矢量和粒子线性动量的向量积。一个完全新的粒子可以由于固体或液体表面因分裂或碎裂而形成。

Linear momentum is an easier and more reliable source of power than angular momentum.

线动量比角动量作为力量来源更为容易和可靠。

In addition to being a fun and intriguing gadget, the Powerball also is a great way to directly experience the Gyroscopic Effect (you know - angular momentum, linear momentum, centripetal force, precession and all those neat physics properties).

除了是一个有趣和迷人的小工具，威力也是一个好方法直接获得的经验的陀螺效应（你知道-角动量，动量，向心力，岁差和所有那些整齐的物理属性）。

According to theorems of momentum and moment of momentum and helmholtzs equation, motion quations of the tethered system are obtained.

根据动量定理、动量矩定理和Helmholtz方程建立了系统动力学方程。

Using the basic dynamic equation of rotary non-inertial system, the basic law of object s movement in the reference system of rotating about fixed axis , and the conditions of momentum conservation and conservation of momentum moment of objects are educed.

利用旋转非惯性系中的基本动力学方程，导出在定轴旋转参照系中物体运动的基本规律，以及物体动量守恒和动量矩守恒的条件。

According to theorem of motion of centre of mass and theorem of moment of momentum about centre of mass , we derive the theorem of moment of momentum about instantaneous center of rotation.

从质心运动定理和相对质心的动量矩定理出发，导出了相对瞬心的动量矩定理。

The first kind is 0-equation model. It only includes mass and momentum conservation equations. Great progresses have been made in improving this model. It has successfully been applied to many natural rivers with complicated boundary geometry. The second kind is κ-ε model. The κ equation and ε equation are needed, besides mass and momentum conservation equations. Many researchers have studied the depth-averaged mathematical models of turbulence in recent years. However, the models were used mostly in regular artificial canals or natural water areas with simple boundaries.

对于宽浅型河流，采用深度平均法进行流场计算时，用得较多的有两类模型：一类是不增加任何脉动量的偏微分方程的模型，这类模型已在适体坐标下运用得较多且较成功；另一类是κ-ε二方程模型，它是近几十年来广泛应用的一类湍流模型，并发展了许多具体的形式，但大多数只对顺直河道进行了研究，对弯曲较大的河道研究不多，本文运用适体坐标，采用正交交错网格及非正交交错网格，把此模型运用到了弯曲较大的河段及具有汇流的河段，取得了较大的成功。

With this angular momentum, according to the three laws of planetary motion proposed by Kepler, a certain amount of angular momentum will create a certain path of movement.

根据喀卜勒的行星三大定律，一定的角动量会产生一定的运动轨道。

The absence of net charge and momentum would follow from accepted physical laws ( Gauss's law and the non-divergence of the stress-energy-momentum pseudotensor , respectively), if the universe were finite.

如果没有净电荷和势头将遵循公认的物理定律（高斯的法律和非分歧应力能量动量pseudotensor分别），如果宇宙是有限的

The mathematical form of material energy-momentum tensor is the same as a sum of the energymomentum tensor in elastic material and the Maxwell stress tensor in electromagnetic field Moreover, under infinitesimal symmetrical transformations, the infinitesimal invariance condition gives a balance of the field variables and material energy-momentum tensor.

另外，在无穷小对称变换条件下，它指出—种场变量与物质能量-动量张量的平衡关系。

The most precious possession that ever comes to a man in this world is a womans heart.

在这个世界上，男人最可贵的财产就是一个女人的心。

Some 4 years above company and divisional management experience, 6 year foreign enterprises work experience.

有4年以上的公司及部门管理经验，6年外企工作经验。