查询词典 particle

Under the condition of the ratio of Fe~(2+)to Fe~(3+)and NaOH molarity constant,the effect of variation of main technological parameter such as reaction temperature,mixing speed,reaction time,pH value on Fe_3O_4 magnetic particle formation,shape and particle size was researched by the orthogonal experiment.

在Fe~(2+)、Fe~(3+)铁盐配比及NaOH摩尔浓度一定的条件下，用正交实验考察了反应温度、搅拌转速、反应时间、pH值等主要工艺参数的变化对Fe_3O_4磁粒子的形成、形貌及粒径的影响。

The result shows:(1) the value of R in situ is higher than 0.8, which is lower than that in lab;(2) the averaged value of relative error in spring tide is higher than that of in neap tide and the value is less than 15%.(3) the particle size is the main factor that influences the precision of OBS, while the biology, the color of particle and water, the air bubble in water have some effect on it.

主要结果有：(1)现场OBS标定R值比室内标定偏低，但也在0.8以上；(2)大潮平均相对误差值变化比小潮大，在悬沙浓度低于1.5kg/立方公尺条件下，大小潮悬沙浓度平均相对误差都在15%以下；(3)悬沙粒径大小是影响OBS观测精度的主要因素，生物、泥沙颜色、水色和水中气泡等因素也对观测结果产生一定影响。

The particle are needle-shaped,with mean short diameter of 50-60nm,average aspect ration of 20-35 and narrow particle size distribution .

经IR、XRD分析表明，所得产品的纯度大于98.0%，产率大于95.0%，各项指标均符合中国和英国药典的要求。

Particle swarm optimizer with neighborhood topology on particle swarm performance.

Kennedy[9]于1999年提出几种基本的领域结构，如环形结构和轮形结构及它们的推广。

In: Proceedings of the 1999 Congress on Evolutionary Computation, Piscataway, NJ: IEEE Press, 1999: 1958~1962.[9] Kennedy J. Small worlds and Mega-minds: effects of neighborhood topology on particle swarm performance. In: Proceedings Congress on Evolutionary Computation, Piscataway, NJ: IEEE Press, 1999: 1931~1938.[10] Peram T, Veeramachaneni K, Mohan C K. Fitness-distance-ratio based particle swarm optimization.

近来性能较为显著的基于PSO算法的改进算法有Thanmaya Peram[10]等人于2003年提出的基于粒子群优化的适应值-距离-比例算法(Fitness-Distance-Ratio based Particle Swarm Optimization， FDR-PSO)，在此算法中每个粒子根据一定的适应值-距离-比例原则，向附近具有较好适应值的多个粒子进行不同程度的靠近，而不仅仅只向当前所发现的最好粒子靠近。

The method uses the measurement results by an Aethalometer, an Optical Particle Counter and an Integrating Nephelometer to revise the aerodynamic sizing of aerosol particle measured by 3321 in Xiamen. The comparisons with other instruments show that the method is satisfactory.

该方法根据黑碳仪、浊度计和光学粒子计数器的测量结果，对气溶胶折射率进行反演，再利用反演的折射率结合黑碳仪和浊度计的测量结果对厦门地区空气动力学粒度仪(3321)测量的空气动力学粒径数据进行光学修正，与光学粒子计数器测量结果对比表明修正的结果是合理的。

By systematically analyzing the single particle level and the occupation probability near the Fermi surface,and the rule of nuclear particle number deviations with proton numbers for N =8,20,28,50,82,126 neutron chains within the relativistic mean-field model with BCS theory,we have discussed the stability of the shell structure for the traditional neutron magic in the whole range of nuclear spectrum from neutron line to proton line,and predicted that traditional neutron magic number effect shall possibly disappear only in light neutron-rich nuclei.

在考虑了BCS理论的相对论平均场模型框架内，通过系统研究 N =8，20，28，50，82和126六条同中子素链中每个元素费米面附近的单粒子能级间隔、粒子数占有概率比以及原子核体系的粒子数偏离随质子数的变化规律，讨论了传统中子幻数的壳结构在从中子滴线区到质子滴线区整个核谱上的稳定性，预言只有在轻核的丰中子区域，传统的中子幻数效应才可能消失，并把计算结果和最近的文献报道作了比较。

As the parameters are numerous in non-rigid registration model, the particle swarm optimization algorithm is selected to achieve exploration and exploitation in the whole feasible space accurately and fleetly for the unknown parameters of nonrigid transformation. Particle swarm optimization algorithm has the characteristic of fast global searching for the optimal, but it is restricted in applications by the inclination of its particles falling into premature convergence.

在非刚性图像配准的框架下，提出应用Wendland紧支径向基函数作为参数化的空间变换模型，并针对非刚性配准模型的未知参数量大的问题，提出应用全局化的粒子群优化算法对整个可行性空间进行快速而准确的探索和挖掘，以求得非刚性变形的未知参数。

The proposed algorithm is a particle swarm optimization based two phases process, one is mapping core onto NoC, and another is the allocation of the routing path. The proposed algorithm uses a novel representation for PSO particle which minimizes the NoC communication energy consumption and keeps the NoC link load balance.

PLBMR是一个两步PSO优化算法，在建立NoC的通信功耗和链路负载的数学表示的基础上，采用一种有效IP核映射与路由分配的PSO粒子编码方法，使得NoC的通信能量消耗最小以及保证NoC的通信链路负载平衡。

Based on Particle Swarm Optimization Algorithm for Scheduling Workflow By studying the mechanism of Particle swarm Algorithm and linking grid service workflow scheduling features, according to quality of grid service, IBPSOA is given, which is an alternative path to the integer-binary coding operations, and dynamic service scheduling algorithm.

3基于粒子群算法的工作流优化调度通过研究粒子群算法PSOA的机理结合网格服务工作流调度的特点，依据网格服务质量QoS，提出了基于粒子群的整数-二进制编码业务路径替代、动态服务调度算法IBPSOA。

It also analyzes the feature and development of semi-finish grinding and finish grinding by roller press.

同时进行了辊压机半终粉磨和终粉磨系统的特点和发展分析。

When I got there, water was dripping slowly from the ceiling and forming a pool on the floor.

当我到那里的时候，水是慢慢地从天花板滴而且形成在地板上的一个池。