Now, I know that momentum is zero, so I only can write down for this situation after the collision m1 0 plus m2 times u2 prime must be zero.
动量为，我只能写下这种情况,在碰撞之后,乘以u1’，that，m1，times，u1，prime,加m2乘u2’必为。
Well, before, the speed is zero and so the momentum is zero. And there comes the bang and one piece flies in this direction with a certain velocity, v2 prime.
在之前，速度为，动量也为0，现在砰响了一声，一片朝这个方向飞，它的速度为v2。
If you know your atoms are inside your experiment, there must be some uncertainty in their momentum keeping them above absolute zero - unless your experiment is the size of the whole universe.
如果你知道在你的实验装置中的原子，它们就必然具有某些动量的不确定性使得这些原子的温度高于绝对零度，不然的话，只有你的实验装置的尺度达到了整个宇宙。
that if the external force, 0 the total external force on the whole system is zero, it means that the momentum cannot change.
,如果外力，作用于系统的外力为，意味着动量没改变。
The momentum of the cluster as a whole would not change if there are no external forces on the system, 0 if the net sum, the total external force, is zero.
星云的动量,作为整体是不变的,若无外力作用于系统，如果外力总和为。
In other words, the vertical component of its linear momentum remains zero, since there is no resultant vertical force.
换句话说，因为没有竖直方向的合力，所以线动量的竖直方向仍为零。
In zero pressure gradient flow, this local momentum loss is Minost an additive constant quantity. On the other hand, adverse pressure gradient results in amplification of this momentum loss.
在零压力梯度下，这个局部的动量损失几乎是一个附加的常量，而逆压梯度则会扩大这种动量损失。
The stability of zero-momentum wheel satellite, only using wheel as the executive component, was analysed.
分析了仅靠飞轮控制的零动量轮卫星系统的稳定性。
In this paper an advanced design concept of zero-bias momentum 3-axes attitude control system consisting of four skew reaction wheels is presented.
本文提出一个与常规不同的零动量——偏置动量三轴姿态控制系统的设计方案。该系统由四个斜装的反作用轮组成。
Simulates the air distribution in an air conditioned airport ball by PHOENICS using zero equation turbulent model and three point momentum draught model.
采用零方程模型和3点动量风口模型，应用计算流体力学软件PHOENICS模拟了某候机厅空调气流组织方案的速度场和温度场。
The lines of zero angular momentum separate the flow into two areas of negative and two areas of positive angular momentum .
零角动量的曲线把物质的流动分成两个正角动量区和两个负角动量区。
The variational momentum of the zero position is that the sighting line of object space changing quantity after the fire, is the quantitative evaluation target of the optic aiming device.
零位走动量即瞄准线射击前后变化量，是光学瞄具稳定性定量评价指标。
The variational momentum of the zero position is that the sighting line of object space changing quantity after the fire, is the quantitative evaluation target of the optic aiming device.
零位走动量即瞄准线射击前后变化量，是光学瞄具稳定性定量评价指标。
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