查询词典 particle

If the particle is in an eigenstate of momentum then its position is completely blurred out.

假如该粒子是处于动量特征态中，那么其位置完全不可知。

In our free particle example, it turns out that it is impossible to find a wavefunction that is an eigenstate of both position and momentum.

我们以自由粒子为例，找到既有位置又有动量的波函数是不可能产生的。

However, we can measure just the position alone of a moving free particle creating an eigenstate of position with a wavefunction that is very large at a particular position x, and zero everywhere else.

然而，我们可以仅单独测量一个运动的自由粒子的位置用多数情况下特别位置X和零其它地方的一波函数来产生一个特征态。

For example, the free particle in our previous example will usually have a wavefunction that is a wave packet centered around some mean position x0, neither an eigenstate of position nor of momentum.

例如，在早先例子中的三个粒子将通常具有波包中心附近是某些所谓的位置x0的波函数，既不是位置特征值也不是动量特征值。

In this paper, coordinate and momentum eigenstates of two-particle have been introduced in the centre-of-mass system. New formalisms of two-mode squeeze operator and two-mode squeezed state have been given in coordinate and momentum pictures.

在质心坐标系下引入了双粒子坐标本征态和动量本征态，得到双模压缩算符和双模压缩态在坐标表像和动量表像中的新形式表示。

The single-particle electronic eigenstates are expressed as a linear combinations of slightly excited PAO's positioned at the atomic coordinates

本征波函数用激发的PAO的线性组合表示

The particle sizes of the SiC are 100 nm, 5μm and 20μm, respectively. The composite materials adding 1% SiC can get better performance. Their tensile strength are respectively 321, 276 and 206 MPa, elongations are 13.8%, 13.6% and 10.6%.

其中所用SiC颗粒粒径为100nm、5μm和20μm，在1%的添加量下复合材料可以获得较好的性能，其抗拉强度分别为321、276和260MPa，伸长率分别为13.8%、12.6%和10.6%。

Particle simulation of the multiwave Cerenkov generator with a resonant cavity operation at low magnetic field.

具有谐振腔的多波切伦柯夫振荡器的粒子模拟。

On the basis of the concept of perfect quantum gas, a physical model of extreme relativity is established for perfect quantum gas, and also according to the conclusions of the state density of the extreme theory of relativity, the densities of quantum statistics′ particle numbers and energy, the extreme relativity′s result of the enthalpy、internal energy and heat capacity of the perfect quantum gas is obtained under the high temperature by strict theory inference.

在理想量子气体概念的基础上，首先建立极端相对论理想量子气体的物理模型；再根据极端相对论的态密度和量子统计的粒子数、能量的密度结论，通过严格的理论推导，得出理想量子气体在高温条件下的极端相对论性的焓、内能和热容量的结果，并将其热容量与高温条件下的理想量子气体、经典理想气体的热容量对比，指出极端相对论与非相对论两种模型、理想量子气体与经典理想气体两种模型的热容量之间的差异，同时分析这些差异的物理原因在于各自气体模型的态密度以及对应体系的波函数的对称性；最后阐明高温条件下极端相对论理想量子气体的热容量在量子统计方面的先进性及应用前景。

The apparent morphology,the state of aggregation and the particle diameters of polyvinyl chloride resin s by different polymerizations are investigated by transmiting electron microscopy and X-ray diffraction patterns.

用透射式电镜和X-射线衍射分析对国内外三种聚合方式合成的聚氯乙烯树脂进行了表面形态的比较观察和聚集态结构的研究，测量了树脂粒子的平均粒径，分散系数以及树脂的有序结构。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。