The results showed that extremely cold rain and snow weather of Sichuan Basin was related well to the variations of water vapor黄色自拍偷拍网址、 frontogenetic function of Yangtze River Basin. at the mid-lower level of the troposphere, especially at 700 hPa level, there was water vapor convergence exiting lastly in Sichuan Basin for long time. And the time of convergence of water vapor was congruous with of cold air in Sichuan basin, and provided the water vapor conditions for the occurrence of low-temperature disaster.

結(jié)果表明：四川盆地的低溫雨雪天氣與南來的水汽變化及長江流域的鋒生作用有密切關(guān)系97婷婷国产在线综合视频，在對流層中低層700hPa上国产又粗又大在线观看，四川盆地長時間存在穩(wěn)定的水汽輻合區(qū)久久只精品99品免费久23，水汽輻合的時段基本與盆地冷空氣活動時間段一致人日人视屏，這為低溫降水的發(fā)生提供了水汽條件免费费一级毛片免费。

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)理論和具體方法進行綜述分析的基礎(chǔ)上，提出了通過采用激光片光對粒子場進行成像以獲取其粒徑和速度等參數(shù)分布的新思路亚洲国产一区区三区在线播放；（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)东北美女性高潮视频，并使其實現(xiàn)了對粒子場粒徑分布的測量功能；（3）研制了基于粒子運動軌跡的速度場重建算法国内视频偷拍网站，獲取了細水霧霧場的速度分布欧美日韩黄片免费在线观看；（4）研制了基于幾何校正、去噪免费无码不卡a片、圖象分割等圖象處理方法的"粒度分析軟件系統(tǒng)"亚洲日本综合图区，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，還可給出粒子的數(shù)目以及最大97爱爱、最小粒徑等信息93一区=区三区持级黄色毛片；（5）建立了一細水霧發(fā)生系統(tǒng)，并應(yīng)用上述方法對不同壓力條件下細水霧系統(tǒng)的霧場特性（如速度分布欧美高清不卡A片快爽、霧滴粒徑分布国产强伦姧在线观看、霧滴的數(shù)目、噴霧張角以及霧化長度等）進行了實驗測量研究一级电影三级电影；（6）對細水霧特性參數(shù)的PIVS測量結(jié)果與計算機簡單模擬計算結(jié)果進行了定性比較分析www.av.，并利用平均粒徑為50μm和115μm的玻璃球以及12μm的標準示蹤粒子對PIVS系統(tǒng)的粒徑和速度測量結(jié)果進行了實驗驗證，同時對其局限性進行了分析討論www.日韩.com；（7）對不同工況條件下細水霧與油池火相互作用的過程進行了模擬實驗研究国产欧美高清。

The results showed that the diurnal changes of photosynthesis of S. chinensis in tile overstory took on "double-peak" curve with remarkable midday depression. The midday depression was mainly due to non-stomata1 limitations. On the contrary, the diurnal changes of photosynthesis of S. chinensis in the understory took on "one-peak" curve with low Pn. The maximal Pn was only half of that of S. chinensis in the overstory. The correlation analysis showed that the limiting factor for this low Pn might be light intensity (p=0.001). Compared with its accompanying plants, S. chinensis was in a disadvantaged status in the community with low photosynthetic capacity, water use efficiency, and the ratio of photosynthetic rate to respiration rate.

結(jié)果表明：夏蠟梅冠層的光合速率日進程呈"雙峰"曲線，有明顯的"午休"現(xiàn)象在线观看你懂的网站免费不卡，經(jīng)分析其"午休"的原因主要是由非氣孔因素引起的亚洲男人综合天堂；林下夏蠟梅則表現(xiàn)為"單峰"曲線，凈光合速率較低国产欧美日韩一区二区，最大凈光合速率不及冠層的1/2av网页在线，相關(guān)分析結(jié)果表明其最重要的影響因子是光合有效輻射(p=0.001)；與其它伴生植物相比久操中文视频，夏蠟梅的日均光合速率可以直接看的A片、最大光合速率、水分利用效率和光合速率／呼吸速率都明顯偏低，在群落競爭中處于不利地位91专区亚洲。

In this study, sulfate radical concentration from 4 drip water points (PL1, PL2, SH, JG) in the Shihua cave have been monitored for three years, and those from the drip water point was monitored for two years. Drip discharges show three types of response to surface precipitation variations: rapid response, response with associated time-lag and stable. The results show that:(1) SO(superscript 2- subscript 4) concentration in rapid response drip water increases sharply during rain period and has a exponential relationship with drip rate;(2) in the drip water of lag response, SO(superscript 2- subscript 4) concentration has no significant incrcase during rainfall, but they show a increasing trend during a long-term monitoring;(3) SO(superscript 2- subscript 4) concentration at the stable drip site is low and has no obvious change during wet weason.

本文通過對石花洞洞穴4個滴水點（JG女人自啪啪一级毛片， SH， PL1和PL2）硫酸根濃度近3個水文年的分析測定九九视频精选，結(jié)果表明：響應(yīng)降雨快的滴水點滴水SO(上標 2-下標 4)濃度升高幅度最明顯特黄又爽又大又粗一级A片，且滴水SO(上標 2-下標 4)濃度與滴率成指數(shù)關(guān)系；滯后響應(yīng)降雨的觀測點滴水SO(上標 2-下標 4)濃度雨季升高幅度不明顯美女一线天，但在長期觀測期間有明顯增加的趨勢毛片在线播；對降雨沒有響應(yīng)的滴水點，其SO(上標 2-下標 4)濃度低且雨季沒有明顯變化黄黄免费视频看。

Secondly, interpret the water-bearing status of drainage-base substance fromTM,according to the water-bearing spectral features,using GIS and RS technologies,based on thesurveying hydrologic data,and build up the projectional mathematical model of the Karstdrainage low-flow resource, in order to solve the calculation of the amount of low-flow resourcesin no documents and data regions.

二是以實測的水文數(shù)據(jù)為基礎(chǔ)欧美独黄色网站，利用 GIS 和 RS 技術(shù)，根據(jù)賦水光譜特征奶头又大又白喷奶水av，從 TM 影像判讀枯季流域下墊面物質(zhì)賦水狀況插插黄色网站，建立喀斯特流域枯水資源預(yù)測的數(shù)學(xué)模型，用于解決無資料色色婷婷网、無數(shù)據(jù)地區(qū)枯水資源量的計算国产曰韩一区二区三区。

For use either indoors or outside, the treatment is ideal for any kind of wall that requires the use of products that are highly transpirable, able to eradicate water, have low capillary absorption, a low content of water-soluble salts and do not form chemical reactions in the presence of sulphates.

這種處理方式可用于室內(nèi)外環(huán)境，具有高度擴散www.日韩、有效去除水分香蕉视频网站、毛細吸收、水溶性鹽分含量低和不與硫酸鹽發(fā)生化學(xué)反應(yīng)的特點亚洲另类中文字幕。

Buy low-flow showerheads — Using aerators in your faucets and installing low-flow showerheads can cut your family's water bills by 50% while helping to conserve our water supply.

購買水流小的淋浴噴頭——在龍頭中安裝通風(fēng)發(fā)散裝置和安裝低流量的淋浴噴頭可以減少50%家庭水費的支出666黄色网站，同時也促進了水資源的保存。

In the paper, adsorption equilibrium and kinetics of water in the solvents of benzene series and low-carbon alcohol on 3A zeolite molecular sieve were studied including effective pore size of zeolite, adsorbate concentration and temperature. The mechanism and characteristics of water adsorption in such systems, the effect of solvents to adsorption equilibrium and kinetics of water were discussed, and diffusivities of water under different conditions were obtained.

論文研究了苯系列物質(zhì)—水體系亚洲综合无码精品一区二区三区、低碳醇—水體系中水在3A沸石上的吸附動力學(xué)精品精品国产高清A级毛片3d，考察了沸石晶格窗口大小、吸附質(zhì)濃度国产盗摄在线精品福利、溫度等因素對吸附動力學(xué)的影響規(guī)律美女被草逼一级A片视频；分析了吸附機理以及兩類體系的特點；通過數(shù)學(xué)模型對實驗數(shù)據(jù)的擬合思思热国产精品视频，求取了各種條件下的動力學(xué)參數(shù)三级网址免费久久；研究了兩類體系的溶劑對吸附平衡和動力學(xué)的影響。

The lift height is high, the conveying distant is long and the cost for water supply of the outlet is expensive, but economical level in the project area is relative low with low bearing capability of consumer to water price.

工程提水揚程高久99www，輸送距離遠，出水口供水成本相應(yīng)也高日本全黄在线视频，而項目區(qū)經(jīng)濟相對不發(fā)達好大好硬好爽高潮日韩喷水在线，用戶水價承受能力較低。

The total amount a row of the our country fresh water resources sixth in the world, but the person all occupies the quantity to be worth equally for the world only of 1/4, occupies the 109 of world, and the resources of water distributes in the time and region up very unbalanced, have 10 province, cities, the water resources of the autonomous region F through low in at least of existence line, person there all the resources of water owns the quantity shortage 500 sign the square rice.

我國淡水資源總量名列世界第六，但人均占有量僅為世界平均值的1/4国产AV一级无码影院，位居世界第109 位熟女91拍，而且水資源在時間和地區(qū)分布上很不均衡，有10個省在线看黄AV性爱、市亚洲人人操人人操、自治區(qū)的水資源己經(jīng)低于起碼的生存線，那里的人均水資源擁有量不足500立方米国产aaaa黄片。