查询词典 droplet

Mie theory and design of a probe of cloud droplet based on this theory are introduced in this paper.

介绍了米氏散射理论，设计了基于米氏散射理论的云粒子探测器。

The scientists say the droplet itself becomes a little laboratory that can do things like pump, separate and mix.

科学家说这些微滴本身变成了一个小型的实验室，并且可以进行例如泵、分离和混合的工作。

If one in a thousand of that hate isconcentrated in a droplet it is enough to poison a nation.

把这份恨意的千分之一集中到一滴水里，那都可以毒死一整个国家！

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。

This paper described such a comprehensive model based on a great number of documents, which takes into consideration details including air entrainment of fuel liquid zones, unsteady heat transfer during droplet evaporation, difference between premixed and entrain dominant combustion rate, compression factor of actual gas in cylinder pressure calculation and minimization of free energy during chemical equilibrium.

摘 要：对增压直喷柴油机的缸内空气卷吸、瞬态燃油液滴蒸发、燃烧过程的分段特征、化学反应平衡的最小自由能机理、实际气体性质修正、燃烧排放物生成等进行了分析，结合缸外的喷油过程仿真及进排气过程的容积法，建立了一个综合的研究性能及排放的准维多区模型，并进行了两个机型多个工况的实机试验比较。

Based on the theory of eletrodynamics and other related subjects, an energy model was established for studying the mechanism of projected transfer mode by introducing "Surface Evolver" as a means of FEM analysis, by commutating and presenting the energy (eletromagnetic, gravity and so on) in the droplet transfer system.

摘 要：为研究MIG/MAG焊的射滴过渡机制，引入Surface Evolver软件作为有限元分析手段，根据电动力学和其它相关学科的基础理论，通过对射滴过渡系统中电磁能和重力势能的数学变换和描述，建立了适合于该软件运行条件的射滴过渡能量模型。

Use the Surface Evolver program to simulate the solder profile evolution and describe the effect on arcing pressure for the wetting and spreading of the droplet.

采用Sur faceEvolver有限元分析软件进行了数值模拟，给出了电弧压力对熔滴铺展成型的影响规律。

Chip cooling ; nanofluid ; nano liquid metal fluid ; nanofluid heat pipe ; nano-liquid droplet ; heat transfer enhancement ; fluidics control

芯片冷却；纳米流体；纳米金属流体；纳米流体热管；纳米液滴；强化换热；流体控制

Introduced a new method for measuring the microinjection volumes by detecting the deflection of cantilever while the gravity of injected droplet bent the cantilever,based on atomic force microscope with nanometer scale resolution.

介绍了一种基于原子力显微镜的微注射量检测的新方法，设计聚酯悬臂感应结构，利用原子力显微镜具有纳米级高度分辨率的特点，对聚酯悬臂在注射微滴重力作用产生的挠度进行检测，达到微滴量检测的目的。

The method of measuring the contact angles between a droplet and fabric is one of the most commonly methods , whereas hypsometry and goniometry are most commonly used methods in the measurement of an angle .

采用接触角来表征织物拒水性能更加精确，液滴角度测量法是接触角测量最常用的方法之一，量高法和量角法是角度测量最常用的方法。

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。