查询词典 particles

Elver detests the feed with larger particles. If the elver ate the feed with the particles in diameter of 70 micrometers, more than 60%feed would be spat.

仔鳗对饲料中的大颗粒极为反感，当饲料中出现直径为70 μm的组分时，被仔鳗摄入口中的饲料有60%以上被吐出。

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

The critical rate equation of the particles engulfment is drawn on the bases of thermodynamic conditions and relative movement of the particles against the interface.

基于两相流原理，给出了粒子进入熔体的临界条件，定量描述了考虑粒子浓度时粒子在熔体中的运动速度，建立了粒子俘获/推移的热力学条件，并在热力学条件及粒子相对于固-液界面运动的基础上，建立了粒子俘获的临界速度判据。

Thus, the energy hybridization model of silver particles was deduced.(2) Laser ablated silver particles were prepared to characterize chemiadsorption of nucleophilic anion IO_3~-and its evocable spectroscopy.

2利用激光烧蚀法制备了"化学纯"银胶，研究了碘酸根离子对银胶表面能级的影响及由此引起的光谱学信号的变化。

The experimental results indicate that the particle size distribution has great influence on the attrition behavior of the catalysts tested, and a mixed attrition mechanism consisting of abrasion and fragmentation is identified for all the catalysts in terms of attrition loss rate evaluation, after-attrition morphology characterization and particle size distribution analysis. It is shown that the attrition of particles was found to evolute following Gwyn's kinetic model and the difference of attrition mechanism of various particles can be categorized with parameters of the Gwyn equation.

实验结果表明，不同粒径的催化剂颗粒具有不同的磨损行为；所有测试催化剂的磨损均由表面剥层磨损和体断裂磨损组成的混合磨损机制所支配；磨损的发展过程符合Gwyn磨损动力学方程，不同颗粒磨损规律的差别可由Gwyn方程的各参数来描述。

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。

PCFK series of pairs of counter-reversible hammer crusher is a new crushing equipment, mainly by knock-on effects to broken materials, broken process in general is this: the material falling into the break in the world, imported high-speed rotation of the hammer impact face was against the entrance of the adjustable crusher tooth wear plate, for the first time broken, broken after the particles basically the same material evenly into the main break, the secondary primary crushing, crushing in the main chamber has been uniformly The material was re-kinetic energy particles from the hammer, high-speed rushed back inside the jagged cavity lining was broken, due to the special lining sawtooth-shaped structure.

PCFK系列可逆双反击锤式破碎机是一种新型破碎设备，主要是靠冲击作用来破碎物料的，破碎过程大体是这样的：落下的物料进入破世界进口后，遇到高速旋转的锤头冲击而被打击到破碎机进口处的可调耐磨齿板上，进行首次破碎，破碎后颗粒基本相同的物料均匀的进入主破碎内，进行二次主破碎，在主破碎腔内已被均匀的物料颗粒从锤头再次获得动能，高速冲向反击腔内部的锯齿形衬板而被破碎，由于衬板特殊的锯齿形结构。

Filtered objects: Dust, farina and lampblack, grease particles and moisture and other suspended particles in the air.

过滤目标：灰尘、粉沫、油烟以及空气中悬浮的微粒物质。

The drag force acting on particles by gas phase is calculated based on empirical correlation proposed by Di Felice, and the counter force of particles to gas phase in a gas grid is determined based on PSIC method.

本文对密相流化床内流化过程的模拟较好地复现了气泡在流化床内的形成、分离、移动、长大及破裂的周期性变化以及相邻气泡间的合并和变形过程。

We find that the ferromagnetism of Ni nano-particles is significantly enhanced, and the magnetic interactions between Co particles are reduced, in the C〓 matrix.

发现C〓基质中的Ni纳米颗粒的矫顽力有显著增强，和Co颗粒间的磁相互作用减弱。

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。