The fog is produced by a device ( thermal fogger ) that uses heat to break up the chemical into very small droplets ( usually in 5 - 30 micron diameter range ) which will disperse in the air 热喷雾是经由一特制装置(热喷雾器) ，利用热力把化学液体化为微细雾滴(直径通常由5至30微米不等)散播并悬浮于空气中。
Second , the iscosity , density , surface tension and size of the spray droplets of binder solutions with different hpc concentrations were determined and wetting characteristics of the binders on the excipients were measured 第二，对不同浓度的hpc溶液的黏性，密度，表面张力和雾滴大小进行测定，并测量黏合剂对辅料的润湿特性。
Because of its special structure , the high velocity flow under the shield , big vortex and upcast flow behind the shield will affect the spray drift . if these situations could be changed , the drift can be reduced further 但由于该罩盖的结构特点，其下方产生较大速度的运动气流和罩盖后部产生的涡流以及上旋气流，将直接影响雾滴的飘失。
When the mosquitoes in flight come into contact with the chemical droplets floating in the air , they will be killed . however , its ability to penetrate dense foliage or obstacles is not as good as that of the thermal fogging 飞行中的蚊子若接触悬浮在空气中的化学雾滴，就会死亡。不过，冷喷雾渗透枝叶茂盛或多障碍物件地方的能力不及热喷雾。
The dried powder product was formed in the spray dryer by pressure nozzle which atomized liquid into small droplets and heat and mass transferring was performed between droplets and hot medium in the drying chamber 压力喷雾干燥装置是利用压力雾化装置将原料液分散成细小雾滴，并与热介质在干燥塔内充分进行热量、质量交换，最终达到干燥产品的目的。
Some cooling system have been installed in open and semi - closed houses , the original data show that this cooling system efficiently solved the problem of heat resistant . the drops movement has been analyzed , the details are as follows 本文对本降温系统的雾滴运动分析、降温系统原理、冷风机降温系统的部件设计和实验测试和实际降温效果进行的分析。
The collection characteristics of charged particle on charged droplets are calculated by an numerical algorithm . with main consideration on the relative strength of particle inertia and electrostatic effect to enhance the efficiencies of particle collection 摘要通过数值计算分析了带电粉尘粒子在荷电雾滴上的捕集特性，主要考虑尘粒惯性和静电效应对于提高粒子捕集效率的相对强弱。
( 4 ) the droplets diameter of the combined spin - flow pressure spray drying are between 30um and 150um and the ranges of the droplets are narrow . the average diameter of the droplets is between 50 um and 100 um and the spraying angle can be adjusted from 30 to 180 ( 4 )采用旋流式组合压力喷嘴雾化后的液滴直径大都分布在30 150um之间，雾滴分布范围较窄，其雾化的平均液滴直径在50 100um左右，压力喷嘴的雾化角度可在150 180范围内。
Based on the liquid water content and optical visibility , the method for determining the parameters of gamma drop size distribution model of fog and clouds are developed , the drop size distributions for advection and radiation fog are obtained with empirical relations of the liquid water content and the visibility , the characteristics of drop size distribution for different kinds of fog are analyzed and discussed 提出了利用云雾含水量和能见度确定gamma云雾滴尺寸分布的方法，利用雾的含水量和能见度的经验关系，得到了辐射雾和平流雾的雾滴尺寸分布模型，并对不同类型雾的尺寸分布特征进行了分析和讨论。
( 2 ) base on the analysis of the atomizing principles of spray nozzle , mathematical model of combined spin - flow pressure spray drying was set up and the essential parameters such as spraying pressure , liquid quantity , temperature , spraying angle , inject distance , particle diameter and distribution , hollow diameter for several materials in normal conditions by experiment and ldv ( 2 )对旋流式组合压力喷嘴喷射雾化机理加以分析，建立了旋流式喷嘴雾化的数学模型，采用冷态试验法并借助激光雾滴测试等实验装置对喷嘴的雾化参数(如雾化压力、喷液量、料液温度、雾化角、雾距、雾滴直径和分布以及喷嘴的空芯半径等)进行测量和计算。
