The physical experiment on hydraulic fracturing propagation in laboratory showed that the penetration of hydraulic fracture into the salutatory barrier mainly depended on the normal stress difference between salutatory barrier and pay zone.

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But the siphonic roof outlet of system has complex hydraulic peculiaritys欧美一级高清a视频永久免费、 high velocity of flow and limited capability of dealing with overflow. The error of any design might cause the system invalid or to be insiphonic, furthermore, it can lead to drainage hitch or make big noise, and overflow will appear when the rainfall exceeds the design value of tube. So we should make further studies to consummate the hydraulic peculiarity and the method of calculation continuously.

但虹吸式屋面雨水排水系統(tǒng)中防旋雨水斗的水力特性復(fù)雜和系統(tǒng)流速大久久九九久精品国产、超泄能力有限，稍有不慎可能造成系統(tǒng)運(yùn)行的失效www交毛片，引起排水故障超碰在线看看，或者產(chǎn)生很大的噪聲伊人亚洲精品分类视频，雨量超過管道設(shè)計值時還會出現(xiàn)溢流96无码视频在线观看，從而需要對其進(jìn)行進(jìn)一步研究午夜小电影日本欧美，不斷地完善其水力特性和設(shè)計計算方法午夜成年小网站无遮挡。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

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In order to put forward technical research and exploitation for drilling hole hydraulic mining, the technological process, ejection mechanism, squirt gun design, lift up efficiency and security stabilization of it are synthetically analyzed, meanwhile many technical problems are reduced to five different outlines.

綜合分析工藝流程黄色网站真人版、噴射機(jī)理黄色视频免费福利网站、水槍設(shè)計、升舉效率和安全穩(wěn)定性等色色视频久久激情，將鉆孔水力采礦的眾多技術(shù)問題歸納為 5個方面的要點(diǎn)內(nèi)容狠狠久久五月，為開展鉆孔水力采礦的技術(shù)研究和技術(shù)開發(fā)工作提出基本思路。

After pretreatment with TFP, although the conductance of cultivate solution of strawberry seedling under NaCl stress was not increased, growth was inhibited obviously by TFP, while the leaf relative electric conductivity in strawberry increased, leaf holding ability was reduced. The inhibiting response increased with the concentration of TFP increasing. On the contrary, conductance in cultivate solution was increased by Ca(NC?3)2 treatment, but the leaf relative electric condu

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Lastly, hydraulic model test of diversion system is carried out. The model scale selection of hydraulic model which includes open channel, long diversion tunnel and surge chamber is discussed.

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The physical and chemical properties of DF from the white trumpet lily and tiger lily were analyzed to be water-binding capacity 4.1mL/g and 3.5mL/g, dilatability 6.5mL/g and 6.1mL/g, combining water capacity 7.1 g/g and 6.5g/g, exchangeable cation capacity 0.73 mmol/g and 0.83 mmol/g, and fat binding capacity 4.4mL/g and 5.2mL/g, respectively.

麝香百合和卷丹膳食纖維的理化特性分別是：持水力4.1mL／g和3.5mL／g国产一区二区熟女，溶脹性6.5mL／g和6.1mL／g亚洲a日韩国产，結(jié)合水力7.1g／g和6.5g／g，陽離子交換能力0.73mmol／g和0.83mmol／g韩国三级电影网址，結(jié)合脂肪能力4.4mL／g和5.2mL／g操的喷水视频。

The results show that this kind of roughening elements can possess a wide range of roughness, and the hydraulic resistance decreases with the increase of space between roughness elements, but reduces slowly to a constant, and that flow enters into the turbulently rough zone when Reynolds number reaches about 3 500, in which the hydraulic resistance decreases with increase of relative submergence degree, reducing slowly to a constant too.

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It\'s possibly that increase of hydraulic limitation with tree height influenced leaf water potential and turgor as well as leaf structure,which strengthened hydraulic limitation on leaf gas exchange characteristics including photosynthesis and transpiration rate, resultantly influenced carbon assimilation and CO_2 fractionation and increased water use efficiency and drought resistance capability.

應(yīng)該是水力限制影響了葉片的水勢和膨壓国产拍一区、同時造成葉片的結(jié)構(gòu)發(fā)生改變，而結(jié)構(gòu)的改變加劇了水力對氣體交換的限制欧美日韩综合精品一区二区、影響了光合碳同化以及對CO_2的分餾效應(yīng)狼友射射射、使葉片的水分利用效率和抗旱性增強(qiáng)。

To solve the problems in present hydraulic calculations of gas pipe network such as numerous data-inputting, unprecise output and a lack of hydraulic calculation methods to keep consistent with steady flow and non-steady flow in real working conditions of gas pipe network, in the paper the author has set up a mathematical model of heat transfer process of gas in pipes on the basis of thermodynamic basic theories and obtained more accurate calculation methods of gas storage quantity in long conveying pipes and urban pipe network of high pressure. This research achievement has been applied to real pipe network.

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