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.

本論文的主要工作包括以下幾個方面：（1）在對粒子場測量的相關(guān)理論和具體方法進(jìn)行綜述分析的基礎(chǔ)上在线观看视频欧美，提出了通過采用激光片光對粒子場進(jìn)行成像以獲取其粒徑和速度等參數(shù)分布的新思路jixxjixx；（2）研制了適宜于低速流動速度場測量的DPIV(Digital Particle Image Velocimetry)系統(tǒng)，并使其實現(xiàn)了對粒子場粒徑分布的測量功能花季传媒免费观看网址ios；（3）研制了基于粒子運動軌跡的速度場重建算法95日韩视频，獲取了細(xì)水霧霧場的速度分布；（4）研制了基于幾何校正视色网视频在线、去噪在线精品日韩一区二区美女、圖象分割等圖象處理方法的"粒度分析軟件系統(tǒng)"，該系統(tǒng)既可分析給出粒子場的粒徑分布直方圖和平均粒徑久久精品无码亚洲一区二区，還可給出粒子的數(shù)目以及最大5级黄色网站、最小粒徑等信息；（5）建立了一細(xì)水霧發(fā)生系統(tǒng)黄色网站十八岁免费，并應(yīng)用上述方法對不同壓力條件下細(xì)水霧系統(tǒng)的霧場特性（如速度分布毛片免费全部播放完整、霧滴粒徑分布、霧滴的數(shù)目无码专区视频一区古典武侠、噴霧張角以及霧化長度等）進(jìn)行了實驗測量研究久久久久亚洲色欲AV无码裤子；（6）對細(xì)水霧特性參數(shù)的PIVS測量結(jié)果與計算機(jī)簡單模擬計算結(jié)果進(jìn)行了定性比較分析，并利用平均粒徑為50μm和115μm的玻璃球以及12μm的標(biāo)準(zhǔn)示蹤粒子對PIVS系統(tǒng)的粒徑和速度測量結(jié)果進(jìn)行了實驗驗證，同時對其局限性進(jìn)行了分析討論国产精品午夜激爽毛片；（7）對不同工況條件下細(xì)水霧與油池火相互作用的過程進(jìn)行了模擬實驗研究欧美国产一级黃片。

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

該方法可根據(jù)當(dāng)前輸電網(wǎng)中各個變電站24小時的電量記錄，利用電量潮流計算對輸電網(wǎng)總線損和各條線路損耗進(jìn)行計算sod9999.com，使計算的精度滿足降損措施分析和指標(biāo)考核的要求一级片播放；并且對于由負(fù)荷出力曲線轉(zhuǎn)化成平均功率計算潮流時引入的誤差，進(jìn)而導(dǎo)致潮流計算不收斂的情況黄色网站一级二级Av，采用直流潮流法毛片女人十A片十女人，依據(jù)相角對有功功率的靈敏度向量判斷出"網(wǎng)絡(luò)異常點"，并且給出了解決此種情況的方法流程圖偷拍区另类综合图片小说；針對結(jié)構(gòu)病態(tài)的電力系統(tǒng)潮流計算不收斂的情況色综合久久久金八天国，運用非線性約束優(yōu)化方法中的最優(yōu)乘子法求解潮流方程的最小二乘解，從而解決了電量潮流法計算理論線損時的收斂性問題国产一级自拍视频，增強(qiáng)了該方法的適用性无码好看中文字幕免费视频。

Hebei TETE's edgeboard is made environmental friendly by using strong paperboard, laminated with water soluable glue which results easy, successful recyling.

護(hù)角板是用環(huán)境無害的硬紙板。該板是用溶水的膠粘合成的層壓板免费一级色色，使其很容易回收再循環(huán)亚洲AAAAAV特级黄片。

This technique applied in 46 cases of pneumonectomy , processing as cutting the anterior and posterior wall of bronchus into two bevels facing interiorly with a 45

對46例肺切除患者術(shù)中切割支氣管時，使其前后壁形成兩個向內(nèi)的斜面偷拍偷窥，并與支氣管縱軸成45°角亚洲人成人网站在线观看，間斷縫閉支氣管殘端。

We haveour own intelligent property rights. Among them our spotlight is one of our typical products. It's the first time that the image illumination technology is used on the spotlight in the world. The reachable distance is raised 2-3 times, its beam of light angle is raised 5-6 times, and much power and energyis saved and illumination well-distributed. There is little color difference, comet difference and color difference for a point. Our spotlight can represent the latest technology of the same products in contemporary age and is granted national invention patent and national new practical patent.

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One of the ferrites Finishing process,Development of Edge Radius - tight control of the tumbling operation for toroids,beads, and baluns, is necessary in order that a sufficient radius is developed along with chip and crack free cores.

鐵粉芯完成工序之一步驟粗暴大黑鳮巴视频欧美中文，為了防止鐵粉芯碎裂性交欧美三级在线，鐵粉芯經(jīng)過翻攪過程国产色色色视频，使尖銳邊緣發(fā)展成導(dǎo)角形態(tài)。