查询词典 particles

In this book the emphasis is on the role of the Dirac equation in the relativistic quantum mechanics of spin-1.2 particles. We cover the range from the description of a single free particle to the external field problem in quantum electrodynamics.

本书着眼于Dirac方程在1/2自旋粒子的相对论量子力学的作用，覆盖了从单个自由粒子的相对论量子力学到量子电动力学的外加场问题。

Because of a single micro-particles macro-state and the nature of the whole system, and there is no simple direct correspondence.

因为单个粒子的微观状态与整个系统的宏观性质，并没有简单的直接对应关系。

The force exerted on one charged particle by another is directed along the line connecting the two particles, and, away from the other particle but, toward the other particle

C： 在库伦定律中，由一个带电粒子所施加在另一个粒子上的力是被指向连接两粒子的一条直线，与另一粒子反向，但朝向另一粒子

Is the wave due to changes in the density of the medium, so that the oscillations of the particles are in the direction of the propagation?

光波是由于介质密度的变化，而使得粒子向波传播的方向作振动的吗？

The definition of the definition of wavelength wavelength wavelength ----: along the direction of wave propagation in the wave graph position of relative equilibrium displacement of the adjacent same time the distance between two particles.

波长的定义波长的定义----波长：沿着波的传播方向，在波的图形中相对平衡位置的位移时刻相同的相邻的两个质点之间的距离。

In the final rendering period, the color field, directional point splatting and color refining technologies were applied to obtain a smoothed image of fire from discrete locations of particles.

在粒子渲染过程中，采用了色度场、有向点扩散和颜色锐化技术，由离散的粒子空间分布得到了较为理想的连续火焰图像。

The new process can continuously or discontinuously make particles according to the needs of particle-making process, overcoming the shortcomings existing in the conventional process.

新工艺可根据造粒工艺要求间断或连续造粒，克服了原工艺流程的缺点。

However, the main aim is discontinuously reinforced titanium matrix composite prepared by traditional technique such as powder technology and liquid metallurgy, where the ceramic particles are directly incorporated into solid or liquid matrices respectively.

人们对其制备工艺、微结构、力学性能等进行了一系列的研究，而这些研究的主要目标为外加法制备的钛基复合材料。

Reynolds Stress Model with wall function was adopted to calculate the liquid-phase flow,and Discrete Phase Model was chosen to trace trajectories of solid particles.

采用雷诺应力模型和壁面函数法模拟流体流动，采用离散相模型跟踪颗粒运动轨迹。

The particle swarm optimization method is applied to NSBM.Firstly the coding approach is designed and then the particles are sequenced using the priority value vectors which make PSO appropriate for the discrete optimization problem.

首先设计了微粒的编码方法；然后采用了基于优先值向量的排序方法对微粒进行解码，有效的利用了微粒群算法在离散优化中的优势；最后利用批调度策略进行分批处理，获得优秀的可行解。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。