查询词典 particle

There are several ways toobtain the DBHF self-energy from the G matrix used before, such as a simple method,where the Dirac structure of the nucleon self-energy is obtained from the momentumdependence of the single-particle energy, and a projection method.

在不同的不对称系数条件下，我们计算出的各密度处的核子平均结合能满足经验的抛物线规律，给出了密度依赖的不对称能。

Activated sludge could be self-degradation in particle layer so that Activated sludge 〓mount was reduced gradually.

活性污泥在滤料层中发生了自解作用，这使得深入到颗粒滤料层中的污泥减量。

The results showed that under the same polishing parameters, the particle size exerted an important influence on MRR and surface quality during unfixed-abrasive polishing, but played a less role during fixed-abrasive polishing. A fine surface roughness of R 1.5 nm was achieved by using diamond fixed-abrasive pad, and the function of self-conditioning was well realized.

结果表明：在相同的抛光工艺参数下，磨粒粒径在游离磨料抛光中对材料去除率和抛光后表面质量作用显著，而在固结磨料抛光中作用不显著；采用金刚石固结磨料抛光垫抛光能获得表面粗糙度约为R1.5 nm的良好表面质量，并在抛光过程中较好地实现了自修整功能。

A new self-adaptive particle swarm optimization algorithm based on k-mean clustering is presented in the paper.

提出了一种新的基于k-均值聚类的自适应PSO优化算法。

The pyrolysis characteristics and kinetics of green seaweed Enteromorpha clathrata were studied with thermogravimetric analysis method. The pyrolysis was carried out at different heating rates (10, 20, 30℃/min) and particle sizes (0.18, 0.28, 0.45mm).

以2005年10月采自江苏如东海区的条浒苔为研究材料，用热重分析法对其热解过程及其动力学规律进行了研究。

The computational model andsimulation method are tested by post-process and visualization of experimentalresults. The application of 2-D Particle Image Velocimetry is also discussed.8 Optimal design of the furnace tube system in an ethylene-cracking furnace isstudied as a practical example. Screw-pitch of the static mixer unit andinstallation layout of tubes with static mixer is discussed.

讨论了先进的二维PIV实验方法应用的可能性。8、以一台典型的工业炉——乙烯裂解炉为例，对静态混合式炉管进行结构优化设计，优化参数涉及元件螺距、安装方式——如安装间距、安装个数、安装方向和相位角等，提出随着静态混合元件的螺距的增大，安装间距也在增大。

It is pointed out that the liquid bridge formed by extern water between two particles as well as particle and screen plate is the main factor which leadS to the deterioration of screening process.

潮湿细粒煤炭的粘附现象是导致筛分过程恶化的最主要原因，为解决这一问题，本文采用理论分析的方法对筛分作业中潮湿细粒煤的团聚机理进行了研究，指出外在水分在颗粒之间以及颗粒同筛面之间形成的液桥是造成筛分过程恶化的首要因素。

Because the scale Gaussian beam description is not accurately satisfies Maxwell equation, it is not suitable for the study of interaction between the beam and small spherical particle.

由于标量高斯光束模不是麦克斯韦方程的准确解，因而不能用于研究粒子与聚焦光束相互作用问题。

The average field idea and the single particle model have been introduced, and the motion behaviours in large scale of beam particles have been disscussed for 2 Dimension crystallization beams in storage rings.

利用平均场概念和单粒子模型讨论了储存环中二维晶化束的大尺度运动行为，结果再现了粒子轨道的螺旋运动特征，并用天体物理学方法揭示了螺旋轨道不断进动的新运动形

In order to crcate new rye grass with better stress tolerance,wc inscrtcd a gcne by particle bombardmcnt as well as Agrobacterium tumefancies LBA4404.The genc, HS1,was a member of HS polygcnc family in Arabidopsis thaliana.

为获得耐逆的新型黑麦草，我们采用基因枪法和农杆菌LBA4404介导方式，向多年生黑麦草中导入一个来源于拟南芥HS基因家族中的成员——HS1基因。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。