粒子

The electron line itself in a Feynman diagram represents a "bare" electron ,whereas the real observable particles are the "bare" particles "dressed " by these virtual processes,the so-called"self-energy" terms which contribute to the mass and charge of the electron that the experimentalist measures.

一个 Feynman 图表的电子线本身表现"赤裸的"电子，然而真正的观察得出的粒子是被这些虚拟的程序穿着的"赤裸的"粒子，那所谓的"自己的-能源"成为块和实验者测量的电子费用的因素期限。

A study was performed on the PIV algorithm based on fast Fourier transformation,and the PIV program was compiled and verified.

在粒子图像测速原理的基础上研究了基于快速傅立叶变换的粒子图像测速算法，并编制算法程序进行验证。

This thesis is aimed to study the flow field in Circulating Fluidized Bed holier in cold state based on the system of Particle Image Velocimetry, Several parts are included: the distribution of particles velocity in CFB boiler including radial velocity and axial velocity of particles; the average radial and axial concentration distribution of particles in CFB boiler; the average radial and axial size distribution of particles in CFB boiler.

本文采用PIV系统对循环流化床锅炉冷态流场进行了试验研究，研究的主要内容包括：循环流化床冷态流场粒子的速度分布特性，包括粒子的径向速度和轴向速度分布；循环流化床颗粒的平均浓度沿径向和轴向分布特性；循环流化床颗粒平均粒径的轴向和径向分布特性。

The principle of particle swarm optimization are presented and the algorithm is applied in optimization design unusual type spirally fluted tubes.

介绍了粒子群优化算法的原理，并将粒子群优化算法应用于异型螺旋槽管的优化设计，针对不同的设计目的，制定了不同的目标函数进行优化。

The effecting factors of charge for pulverized matter are briefly introduced, the charging reason is described from the existing phenomena of electrostatic charge, when the granule is contacted and fricative with, separated from the outside mechanic material used.

介绍了粉体带电的影响因素，从粒子与外用机械材料和粒子接触、擦、分离时发生静电的现象，对带电原因进行了阐述。

Nanoscale zero valent iron particles were synthesized by reductive method in aqueous phase. The crystal structure, morphology and size of the particles were characterized using X-ray diffraction and transmission electron microscopy. The influence of temperature, initial acid fuchsine concentration, nanoscale zero valent iron dosage and pH on the removal of acid fuchsine by the particles was studied, and the removal mechanism of acid fuchsine was discussed.

摘 要：采用液相还原法制备零价纳米铁粒子；用X射线衍射和透射电镜表征该样品的晶体结构、颗粒形貌与尺寸；研究温度、酸性品红初始浓度、纳米零价铁加入量及溶液pH值对零价纳米铁粒子脱除酸性品红的影响，并对酸性品红的脱除机理进行讨论。

In 1932, Chadwick made a fundamental discovery in the domain of nuclear science: he discovered the particle in the nucleus of an atom that became known as the neutron because it has no electric charge.

查德威克立刻着手研究约里奥·居里夫妇做过的实验，用云室测定这种粒子的质量，结果发现，这种粒子的质量和质子一样，而且不带电荷。

As a matter of fact,free particle are automatically placed in the field interaction once local gauge transformation is made on them.

其实 ，对自由粒子做局域规范变换，粒子就已被自动置于场的相互作用之中了。

The method takes amorphous silica as silicon source and by the steps of soaking, baking, Fe nano particles is implanted, amorphous silica implanted into Fe nano particles and Alpha germanium oxide are mixed and grinded, the obtained mixture is gas-solid treated by organic amine, so as to obtain the silicon germanium oxide composite nano line.

该方法是以无定型氧化硅作为硅源，通过浸泡、焙烧植入铁纳米粒子，再将植入铁纳米粒子的无定型氧化硅和α氧化锗混和研磨，通过有机胺的气-固相处理，最终获得硅锗氧化物复合纳米线。

It is one granule, an inseparable one.

因为它是一个粒子，它是一个不可分割的粒子。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。