这些物理系统的测试依赖于对作用力、质量和能量守恒定律的标准设计实践。
Design and testing of these physical systems rely on standard design practices that employ the laws of conservation of force, mass, and energy.
物理学一条基本定律认为动量守恒，也就是说，除非外力进入系统，否则总动量一定保持不变。
A fundamental law of physics holds that momentum is always conserved, meaning that unless some outside force enters a system, its total momentum must stay constant.
在任何时候，看板(相当于系统中的“能量”)的最大数量都与在制品的上限保持守恒。
The maximum number of Kanbans (the "energy" in the system) is fixed and physically conserves the upper limit of WIP at any given time.
这是我们第一次，在这种系统里使用，角动量守恒定律。
Now we're going to apply for the first time in systems like this, the conservation of angular momentum.
若没有外力，作用于系统整体，在碰撞过程中，动量就是守恒的。
And if there is no net external force on the system as a whole during the collisions, then momentum is conserved.
能量可变可不变，可增加或减小，或保持动能不变，但若系统无外力，动量总是守恒。
Energy can change or cannot change, can increase or decrease or remain the same kinetic energy, but if there are no external forces on the system, momentum is always conserved.
系统作为一个整体，动量是守恒的。
It's just the system as a whole for which the momentum is then conserved.
研究一类解耦非线性双曲守恒律系统的广义黎曼问题。
The generalized Riemann problem for a class of decoupled nonlinear hyperbolic system of conservation laws is studied.
角动量的向量特性，进动，角动量守恒(它在系统内部之间的转移)，章动。
Vector nature of angular momentum, precession, conservation of vector angular momentum (its transfer between parts of a system), nutation.
研究有多余坐标完整系统的对称性与守恒量。
The unified symmetry and conserved quantity of the holonomic mechanical systems with remainder coordinates are studied.
根据基本的质量守恒定律、能量守恒定律以及一些经验公式等建立了系统的动态数学模型。
Based on the mass conservation law, the energy conservation law and some empirical equations, the dynamic model is built.
能量的守恒并不要求系统必须是孤立的。
The conservation of energy does not require that a system be isolated.
研究相对论性变质量系统的守恒律。
The conservation laws of relativistic variable mass systems were studied.
研究具有双面理想完整约束的变质量力学系统的机械能守恒律。
The conservation law of mechanical energy in variable mass mechanical systems with ideal bilateral holonomic constraints is studied.
本文介绍了力学中的一个新概念机械能流，研究了能流中的应力张量，并讨论了动力学系统中机械能密度守恒点的一个应用。
This paper introduces a new concept-mechanical energy flow, studies stress tensor in energy flow and an application of mechanical energy density conservative points in dynamical systems is discussed.
提出动力学系统守恒定律构成的一般途径。
To present a general approach to the construction of conservation laws for the dynamical system.
根据能量守恒原理又推导了钻机盘式刹车系统的能量转换表达式。
The expressions of energy transformation for disc brake system of drilling rigs are derived on the basis of the principle of energy conservation.
研究了单面完整约束系统的对称性与守恒量。
The symmetries and conserved quantities for the systems with unilateral holonomic constraints were studied.
本文针对系统相对于地球参照系机械能守恒时，在相对于地面作匀速直线运动的参照系中机械能是否依然守恒的问题进行了重新论证。
This article expounds again whether the mechanical energy is in the uniform motion in a straight line, as the mechanical energy is conservative when the system is in the frame of earth reference.
本文运用时空守恒元与解元方法对进排气系统中的气体流动进行了模拟计算。
The space time conservation element and solution element method was applied to simulate the unsteady gas flow in intake and exhaust manifold of ICE.
利用动量矩守恒原理导出带太阳阵航天器的动力方程，指出了系统的非完整约束性质。
The equation of a spacecraft with solar arrays are obtained by using the conservation principle of momentum .
系统地阐明机械能守恒定律无条件服从力学相对性原理。
It is explained that the law of conservation of mechanical energy obeys relativity principle of mechanics.
并进一步论证了原子系统与外磁场能量之和是守恒的。
This article proves fatherly that it is a conservation of the sum of atom system and outside magnetic filed.
因此，研究保持哈密尔顿系统的能量守恒性及辛几何结构特征的数值方法是必然的。
Therefore, it is necessary to study numerical methods which preserve the energy conservation or the symplectic structure of the Hamiltonian system.
利用物质守恒原理，以鸡舍为半封闭系统，分析了鸡舍内NH3在通风状态下的动态守恒情况。
Taking the henhouse as semi-obturation system, dynamic conservation of NH3 in henhouse under ventilation condition was analyzed based on the law of conservation of mass.
文章系统地阐明了机械能守恒定律无条件服从力学相对性原理，若总机械能在一个惯性系守恒，它就在所有惯性系守恒。
In this paper it is explained that the law of conservation of mechanical energy must Obey the relativity principle of mechanics.
利用简单对称性的电磁场，讨论了场和电荷系统遵从的动量守恒、量矩守恒定律。
With a simple symmetrical electromagnetic field, the law of conservation of momentum and the law of conservation of angular momentum for electromagnetic field and charges system are investigated.
力学系统的对称性与精确不变量（守恒量）在力学、物理学中具有非常重要的意义。
The studies on symmetries and exact invariants (conserved quantities) play a very important role in mechanics and physics.
根据能量守恒原理， 推导了高斯光束整形系统中任意光线在入射面与出射面的坐标变换关系。
The relationship of coordinate transformation of arbitrary rays in an incident plane and an image plane was deduced based on the law of energy conservation.
根据能量守恒原理， 推导了高斯光束整形系统中任意光线在入射面与出射面的坐标变换关系。
The relationship of coordinate transformation of arbitrary rays in an incident plane and an image plane was deduced based on the law of energy conservation.
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