动量被认为是“守恒的”，也就是说，动量一旦被建立，就一定会转移到其他地方。
Momentum is said to be "conserved", that is, once you build it up, it has to go somewhere.
能量在其任何形式都是守恒的。
我们要再一次假定，动量是守恒的。
仅仅利用机械能概念，它是守恒的。
We only used the concept of mechanical energy, which is 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.
机械能是守恒的，因为重力是守恒力。
Mechanical energy is conserved, because gravity is a conservative force.
总能量必须是守恒的。
我们仍将看到违反CP守恒的现象。
在标准模型中重子数是绝对守恒的。
The baryon numbers are absolutely conserved in the Standard Model.
这是角动量守恒的，立竿见影的效果。
That's immediate consequence of the conservation of angular momentum.
你看，这正是，验证动量守恒的方法。
So, you see, that's exactly how you can demonstrate the conservation of momentum.
动能是守恒的。
在一个封闭的经济体系，货币是守恒的。
它们的波长就是我们评估是否守恒的关键。
The wavelengths of that light are our key to assessing conservation.
也就在反应期间,我有个合理假设，动量是守恒的。
It's just during the impact I claim that to a reasonable approximation, momentum will have to be conserved.
提出了一种满足通量守恒的内边界耦合条件。
An internal coupling condition is given to make the conservation of flux satisfied.
这种观点和热质论关于热量守恒的观念相矛盾。
This is in contradiction to caloric-theory notion of conservation of heat.
能量是守恒的，也就是说不会减少，也不会增加。
Energy is conserved, that is, none is lost and none is increased.
那么墙壁也定有动量-，这是毫无疑问的，因为动量是守恒的。
That momentum must be in the wall — it's nonnegotiable, because momentum must be conserved.
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.
动量是守恒的，因为它不受外力，因此动能也是守恒的。
Momentum is conserved, because there was no net external force, so now kinetic energy is also conserved.
根据弱荷的手征性，合理地解释了宇称不守恒的原因。
According to the chirality of the weak charge the origin of parity nonconservation in the weak interactions is reasonably explained.
因此，我们不能把语句“能量是守恒的”做为一个绝对的陈述。
As a consequence, we cannot turn the statement "energy is conserved" into an absolute statement.
在可逆过程中，火积是守恒的，不发生热量传递能力的耗散。
In reversible process, there is the entranspy conservation, that is, no loss of capability of heat transport.
在本章中，我们要揭示一个质点集体作运动时动量守恒的含义。
In this chapter we develop the implication's of momentum conservation in the motion of a collection of particles.
因此等式(1.1- 11)可以作为粒子几率守恒的表达式。
Equation 1. 1-11 is thus a statement of the conservation of particle probability.
如果违反能量守恒的持续时间不太长，那么自然界并不反对这种违反。
Nature has no objection to a violation of energy conservation, provided (that) the violation does not last too long.
在物理中我们并非坚信，能量是守恒的，这并不是一定的，动能不一定守恒。
Now, in physics we do believe very strongly in the conservation of energy, not necessarily in the conservation of kinetic energy.
在文中引入了扩展全空间概念，由此得到电荷守恒和电流守恒的一般形式。
This paper introduces the concept of extended total space, and then we extend conservation of charge and conservation of current to general case.
在文中引入了扩展全空间概念，由此得到电荷守恒和电流守恒的一般形式。
This paper introduces the concept of extended total space, and then we extend conservation of charge and conservation of current to general case.
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