喷雾于

It is found that there is a critical value (25mm) for the distance from the nozzle to the skin surface when the spray time is 40 ms. If the distance is too far or too near, heat extraction process will have different characteristics. The results could provide an applicable method for guiding the Cryogen Spray Cooling of laser therapy.

发现喷雾时间在40ms时，喷嘴到皮肤的距离具有一临界值（25mm），大于或小于此距离喷雾与皮肤的换热作用具有不同的特性，研究结果对于将制冷剂喷雾冷却实际应用于激光治疗鲜红斑痣手术具有重要的指导意义。

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。

There are one spray gun connected to a reciprocator on the base, one rotating locator set below the spray gun and locating with the sprayed barrel bottom, one circulating and purifying water curtain system opposite to the spray gun to purify the sprayed fog, and one PLC controller set on the base to regulate the spraying.

其喷枪与一安装在机座上的往复装置连接，机座上、位于喷枪的下方设有一利用喷涂钢桶之桶底进行定位并驱动喷涂钢桶转动的旋转定位装置，同时在机座之喷枪口朝对的一侧设有水帘循环净化系统，内喷机之喷涂区间的喷雾经过该水帘循环净化系统后排出，所述内喷机的喷涂调节由安装于机座上的PLC控制器控制。

Controlled-release membrane was prepared based on the phase inversion method in which circulated urea particles were coated with polyethylene and olefin dispersed in tetrachloroethylene solution. The effect of atomizing on the membrane structure and nutrients release characteristics was investigated systematically.

利用喷雾相转化法将聚乙烯和石蜡溶于四氯乙烯的溶液喷射到处于流化状态的大颗粒尿素上，制备控制肥料养分释放的控释膜，系统地研究了喷雾－相转化－成膜过程中雾化状态对控释肥料膜结构和养分释放性能的影响。

In cases, where ice is not available. special ice packs should be preferred (some drug-companies supply packs with two component materials, which freeze when their separating membrane is destroyed by twisting the pack, so that these materials come together) to reduce swelling, tumefaction and pain; but in contrary ice-sprays are mostly superfluous (their only effect is immediate, but not lasting pain relief).

为防万一，在不能用冰直接进行敷治时，应当优先选用特殊冰袋（部分药厂提供的冰袋有两部分组成，当扭动外包装破坏隔离他们的膜时，两种物质汇合产生冰冻）来缓解伤痛；而用冰的喷雾剂则显多余（它只作用于喷雾当时，过后无法持续缓解伤痛）。

TTC has more than 40 state patents including ruby nozzle, anti-leakage and anti-bump nozzle, water processing device, mist formation device, mist and fountain device, mist sculpture and lamp device and temperature and humidity control device, so it can provide perfect, healthy and controllable misting effect for its partners, who have used TTC RubyMist system successfully in Hong Kong Disneyland, Hong Kong Zoological and Botanical Garden, Shanghai Binjiang Park, Beijing Yuandadu Wetland, Hangzhou Dragon Well Garden, Xiamen Tianzhushan Park, Image Liu Sanjie, Image Lijiang, Opening Ceremony of the 10th National Games, Opening Ceremony and Closing ceremony of the 4th East Asia Games, CCTV-1 2006 Spring Festival Party and many teleplays such as "Magic vulture and knightly lovers" produced by Zhang Jizhong.

TTC雾森系统，是目前为止撞击式雾化颗粒最细的雾化系统设备，它以水为原料，达到造景、降温、控湿、除尘的效果和目的，广泛应用于景观造景、舞台造景及空气净化等领域之中。TTC拥有的宝石喷嘴、防滴防撞喷嘴、水处理装置、喷雾造型装置、喷雾喷泉装置、喷雾雕塑灯具装置、温度湿度调节装置等40余项国家专利，为TTC的合作伙伴和客户提供了完美、健康、可控的高品质雾效保障。

Ttc has more than 40 state patents including ruby nozzle, anti-leakage and anti-bump nozzle, water processing device, mist formation device, mist and fountain device, mist sculpture and lamp device and temperature and humidity control device, so it can provide perfect, healthy and controllable misting effect for its partners, who have used ttc rubymist system successfully in hong kong disneyland, hong kong zoological and botanical garden, shanghai binjiang park, beijing yuandadu wetland, hangzhou dragon well garden, xiamen tianzhushan park, image liu sanjie, image lijiang, opening ceremony of the 10th national games, opening ceremony and closing ceremony of the 4th east asia games, cctv-1 2006 spring festival party and many teleplays such as "magic vulture and knightly lovers" produced by zhang jizhong.ttc人力政策我们期望的ttc

ttc雾森系统，是目前为止撞击式雾化颗粒最细的雾化系统设备，它以水为原料，达到造景、降温、控湿、除尘的效果和目的，广泛应用于景观造景、舞台造景及空气净化等领域之中。ttc拥有的宝石喷嘴、防滴防撞喷嘴、水处理装置、喷雾造型装置、喷雾喷泉装置、喷雾雕塑灯具装置、温度湿度调节装置等40余项国家专利，为ttc的合作伙伴和客户提供了完美、健康、可控的高品质雾效保障。

The uniform droplet spray process is a nongas atomization technique that produces uniform alloy droplets with identical thermal properties.

匀滴喷雾方法是无气雾化技术，这以同样的热特性生产均匀的合金融滴，匀滴喷雾方法控制层流喷气机的分层，是一种类似于喷墨印刷的方法，并根据既定的微观结构沉淀小滴。

Water pump station is mainly applied in the mist spray and aspirating of coal cutter.

喷雾泵站主要应用于采煤机的喷雾除尘，是采煤工作面喷雾系统的主要组成部分。

Water pump station is mainly used in the mist spray and aspirating of coal cutter.It is a main part of the aspirating system of the coal face.

喷雾泵站主要应用于采煤机的喷雾除尘，是采煤工作面喷雾系统的主要组成部分。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐