drop of pressure 中文意思是什麼
drop of pressure
解釋
壓降-
The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. the model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20 %
復合塔板的壓降可認為由干板壓降、清液層阻力、填料層壓降和克服液體表面張力的壓降四部分組成，所建立的壓降計算模型，能較好地預測復合塔板的壓降，計算值與實驗值誤差在20以內，可用於工程設計。 -
The results of experimental investigation on heat transfer and fluid pressure drop of spirally fluted titanium - tubes for steam condensation are reported and analyzed
摘要介紹了鈦螺紋槽管傳熱及流動阻力的實驗結果，並對結果進行了分析。 -
The correlation is considered to be an accurate method for the calculation of pressure drop in the pneumatic transport of solids.
這個相關規律被認為是在固體氣體輸送中一種計算壓降的精確方法。 -
The hydrodynamic propulsor takes drill fluid as power source, with the aid of the axial load produced by the pressure drop of the bit nozzle, makes the axial force act on the bit to produce wob, making up for the insufficient wob, ensuring the bit feeding smoothly and improving the penetration rate
這種推進器以鉆井液為動力源，藉助鉆頭噴嘴壓降產生的軸向載荷，使軸向力直接作用於鉆頭產生鉆壓，彌補有效鉆壓不足，保證鉆頭平穩鉆進，提高機械鉆速。 -
Experiment on the pressure drop of crude oil - water pipe flow
水管流壓降規律實驗 -
In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。 -
A nonlinear mathematical model is developed to determine the flow rate distribution in the parallel tubes of boiler superheater and reheater by depending on the relation of pressure drop among individual tubes and accounting for the static pressure variations in the inlet and outlet headers
根據並聯管組各根管子進、出口壓力降之間的關系，並考慮到分配集箱與匯集集箱中流體的靜壓變化，建立了鍋爐過熱器、再熱器流量分配的非線性數學模型。 -
And experimental study on the heat transfer performance and pressure drop characteristic of the process of bubbling evaporative cooling are carried. as there are so little attention and studies on the process bubbling evaporative cooling about heat transfer in the world at present, this paper mainly deals with the effects of the different bare tower velocity, weir height, heat flux density and plate perforation geometries on the heat transfer coefficient and the pressure drop of the process of air flowing
由於目前國內外對鼓泡蒸發冷卻過程在換熱方面的關注和研究較少，本文對不同空塔速度、不同堰高、不同熱流密度、多孔板的不同幾何尺寸對換熱系數及空氣流動過程阻力的影響進行了實驗研究及理論分析，總結了本實驗條件下換熱及阻力的實驗關聯式。 -
W. qu and i. mudawar, “ experimental and numerical study of pressure drop and heat transfer in a single - phase micro - channel heat sink, ” international journal of heat and mass transfer, vol. 45, pp. 2549 - 2565, 2002
吳德洋， 「散熱座應用於水冷系統之效能評估」 ，大同大學機械工程研究所碩士學位?文， 2003年6月。 -
Pressure drop of flow of pam aqueous solution in concentric annuli with isometric ring slots on the inner cylinder
聚丙烯酰胺水溶液在內管帶有等距環槽的同心環空中流動的壓降 -
Al2o3 coating is provided not only as insulation layer to decouple electrically the liquid metal flow from the load - carrying wall in the sake of the decisive reduction of pressure drop, but also as a barrier to reduce tritium permeation into structure materials
為減少液態金屬mhd壓力損失，分析液態余屬包層各種相關材料影響因素，在液態金屬流動管道內壁加以al _ 2o _ 3絕緣塗層達到電學和熱學性質上的絕緣，並起到相當好地氚壁壘效果。 -
Key issues including water plugging types, waterproof board spreading methods, drop of external water pressure and lining design for resisting hydraulic pressure, etc. were studied, thus the composite waterproof and drainage system to control drainage were put forward, including grouting sphere for water plugging, primary support, grid sysytem for waterproof and drainage and lining to resist hydraulic pressure
重點就堵水方式、防水板鋪掛形式、外水壓力的折減以及抗水壓襯砌設計等技術問題進行了研究，提出了可通過注漿堵水圈、初期支護、防排水網格和抗水壓襯砌形成綜合防排水體系，它可以達到控制排放的目的。 -
The early coaxial progressive depressing makes the forming of tectonic lens in the competent rich - sodic and incompetent rich - mud rocks ; the later nocoaxial progressive shearing makes the tectonic compression fracture into extension fracture in the early tectonic lens, at the same time, the great drop of pressure leads to the hydrofractureing of deep fluid along the fracture in the rich - sodic rocks, and then produces the hydrofracturing breccia
早期共軸遞進擠壓使能幹性的富鈉質巖系與非能幹性的富泥質巖系發生構造透鏡石香腸化；晚期的非共軸遞進剪切使早期在透鏡體中心形成的構造裂隙由剪性轉化?張性，並?生巨大的壓力降使深部的流體在富鈉質巖系中沿裂隙發生水力壓裂作用，從而形成雙王水力壓裂含角礫巖。 -
In addition, considering the essential characteristics of the fusion - fission hybrid reactor, the preliminary analysis and research of the mhd pressure drop of liquid metal that flow through the fuel packed pebble bed - based blanket are given
另外，基於聚變中子源驅動的次臨界清潔核能系統，針對聚變?裂變嬗變混合堆的本質特點，對液態金屬球床包層進行初步地探討和研究，進行了球床液態金屬溢流的磁流體動力學流動的建模分析和計算。 -
The liquid metal pb - 17li flow through a packed pebble bed - based blanket is considered to be one of the blanket candidates. the mhd pressure drop of liquid metal flow through the packed pebble bed has been calculated and analyzed under various conditions including ( a ) the size of the packed pebbles ; ( b ) the ratio of occupied room by the packed pebbles to that of liquid metal ; and ( c ) whether the pebbles surface is insulated or not
在聚變中子源驅動的次臨界清潔核能系統的科學可行性和技術現實性基礎上，對聚變?裂變嬗變混合堆的多種概念性包層進行探討，對影響液態金屬在球床包層中的mhd壓降的相關因素（包括燃料小球的大小、液態金屬與燃料小球的占空比和燃料小球表面是否絕緣）進行分析研究。 -
In this dissertation, the experimental study of rolling condition on two - phase flow instabilities of the forced - single - tube circulation system was carried out. furthermore, based on the d - partition method and the hypothesis of drift flow model, given some conservative equation, using the perturbation method the response of the pressure drop of the tube to the inlet flow rate perturbation was analyzed both in rolling condition and in normal upright position
本文主要通過實驗對搖擺條件對單管強迫循環中汽液兩相流動不穩定性的影響，同時在d分區法的前提下，在兩相區基於漂移流模型，一定的守恆條件下，在搖擺和不搖擺工況中用線性小擾動法對實驗段的壓降對入口流速的擾動的響應進行了分析。 -
Study on pressure drop of two phase flow in positive pneumatic conveying system
麵粉正壓氣力輸送的兩相流壓損研究 -
Tobacco and tobacco products - draw resistance of cigarettes and pressure drop of filter rods - standard conditions and measurement
煙草和煙草製品卷煙吸阻和濾棒壓降標準條件和測量 -
In aspect of theoretical stud y, the model of high - pressure welding arcs is established, and the governing equation of high - pressure welding arcs and computing equation of voltage drop of arcs are given
在焊接電弧理論研究方面，建立了高壓焊接電弧模型並提出了高壓下焊接電弧的控制方程以及電弧電壓的計算方程。 -
When in experiment, the air was heated by the film heater installed on the above and below surface of channel, adopting various air velocity of flow, test import ' s and export ' s temperature, wall temperature, fluid flux and the drop of pressure, and the other parameter. adopting nu and nu0 to analyze the baffle ' s situation of heat transfer and fluid flow, which baffle was holed various diameters
實驗時，通過矩形通道上下壁面敷設的電加熱膜加熱通道空氣，改變空氣流速，測試不同工況時的進出口溫度、壁面溫度、流體流量和壓力損失等參數，並採用無量綱努謝爾特準則數nu 、 nu _ 0等分析了設置不同開孔折流板的換熱與流動情況。
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