界面壓力 的英文怎麼說
中文拼音 [jièmiànyālì]
界面壓力
英文
interfacial pressure-
Analysis of singular electromechanical fields at the interfaces of bimorph with a quot; cracked element quot
用裂紋單元分析雙壓電材料界面力電耦合奇異場The paper studies the surface geometry of globoidal indexing cam by applying the theory of conjugate surfaces and the method of coordinate transformation, presents the equations related to the main inducement curvature of the cam profiles, analysis and deduces the equations of two circumscription curves, which judge if the conjugate surface could mesh properly. some calculate examples and conclusion are given. the surface equation of the globoidal cam and conjugate equation are established
論文首先在分析空間嚙合原理基礎上,採用坐標變換法推導出弧面分度凸輪的工作廓面方程、嚙合方程和壓力角計算公式,對弧面分度凸輪的嚙合特性進行了深入的分析和研究,對判斷曲面能否正確嚙合的依據如兩類界限線方程以及誘導主曲率等進行推導,並給出算例。Abstract : in the research of internal combustion engine, recordingin - cylinder pressure and temperature is an essential technique to study the thermal cycle of internal combustion engine. the combustion analyzer developed in this study will give both the measurements at sampling points per crank angle or sampling cycle, calculate and show the real time parameters which decide the working process of internal combustion engine, such as pressure accelerating rate, indicateed mean effective pressure, cycle - to - cycle variation, heat release rate, etc. compared with the imported congeneric products, the analyzer has many advantages such as chinese interface, low price, easy operateing, convenience in maintainance and easy upgrading
文摘:為了測錄內燃機缸內的壓力及溫度,開發了一種內燃機燃燒分析儀.該分析儀由國產高速數據採集卡及自行開發的控制軟體組成.它不僅能精確設置每度曲軸轉角內采樣點的個數和採集循環數,而且在採集過程中能實時計算和表徵內燃機工作過程的壓力升高率、平均指示壓力、循環變動率、放熱率等參數.經實際使用以及與國外產品相比表明,此分析儀具有全中文界面、價格低、操作簡單、使用維護方便、功能便於擴充等優點Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象,採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料,結合其力學性能、掃描電鏡和界面微區能譜分析結果,分析了sic _ p al復合材料的真空燒結過程中的界面現象,以及材料增強和斷裂機理,並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態(應變率為3 . 3 10 ~ ( - 3 ) s ~ ( - 1 ) 5 . 2 10 ~ 3s ~ ( - 1 ) )的壓縮破壞響應進行了研究,分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下,材料的變形和微觀損傷機理,以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。Located in luo dai town, hakka ancient town in china, and founded in 1990, chengdu keda automobile components co., ltd is a professional manufacturer engaged in producing vehicle, motor components and various kinds of electric elements, the company covers an area of over 10, 000 m2, has staff more than 100 ( including 8 senior engineers and 15 technicians with medium - grade professional title ) has more than 80 inclinable presses and various kinds of superior machine work equipment
成都科達車用零部件有限公司座落在世界客家古鎮中國洛帶鎮,創建於1990年,是汽車、摩托車零部件、以及各型電器元件的專業化製造商,公司佔地面積一萬余平方米、職工一百余名(其中高級工程師8名、中級職稱技術人員15名) 、擁有從6 . 3噸200噸可傾式壓力機和各種精良機加設備八十余臺。Bond fracture appeared to be due to osmotic pressure generated in the bubble by water soluble constituents leached from the interface.
粘結破裂的出現是由於外界面溶解出水溶性成分而鼓泡產生滲透壓力之故。First, it was taken that a discuss about the effects of geometry parameters of each piezocrystal on direction parameters ( main lobe width, side lobe amplitude, elimination of grating lobes ), amplitude of ultrasonic pressure, element viberation pattern, mutual radiation among elements, efficient test regions, ability to keep accurate and near - field distance and so on. based on the direction of ultrasonic field in ulpa deduced by ourselves. in addition, on the base of integrating all kinds of factors, it was put forward that the principle and method for optimized design of geometry parameters of piezocrystals in ulpa transducer, and its design programme and interface were compiled
首先在推導超聲相控線陣換能器聲場的指向性的基礎上,就各個晶片幾何參數對指向性指標(主瓣寬度、旁瓣幅度、消除柵瓣) 、聲壓幅值、陣元振動模式、陣元間互輻射、有效檢測區域、精確控制能力、近場長度等方面的影響進行了論述,並在綜合各方面影響的基礎上,提出了晶片幾何參數優化設計的原則和方法,編寫了設計程序和界面。On the other hand, there have been business pressure groups that sought to represent the interests of industry.
另一方面,也有企業界的壓力集團,它們謀求代表工業界的利益。Under the upper pressures belt or minute super pressures of the upper triassic series and jurassic system interface formation, the fluid in the upper triassic series moved along stratum interface, fault and crack network thoroughfare, formed " secondary gas pool " in the jurassic system
上三疊統和侏羅系界面形成的超壓帶或微超壓帶,使上三疊統氣藏流體在壓力差的作用下,沿斷層、地層界面和裂縫網路通道運移,在良好的侏羅系圈閉中形成「次生氣藏」 。( 2 ) increasing of wind is mainly induced by shf and affecting of lhf is very little. ( 3 ) effect of terrain increases ground rough and tonsure of terrain press and fiction correspond enhance frictional damp effect
( 3 )地形作用相當于增加了地面粗糙度,地形壓力梯度項與摩擦項地疊加,相當于使摩擦阻尼作用增大,地形強迫作用使下邊界層從上至下風速減小,風向向左偏轉。In addition, it was the sign of the initial amplitude growth rate, not the manner of the interface motion that determined whether the amplitude could increase. at weakly nonlinear stage, mode - coupling equations were derived in cylindrical and spherical geometries. it showed that the nonlinear terms were inversely proportional to the position of the interface in cylindrical and spherical geometries
在弱非線性階段,推導了柱和球幾何中模耦合方程,結果表明:非線性作用項反比于界面的位置,界面的位置越小,非線性作用越強,反之越弱;同時柱幾何中模耦合方程的解表明,在收縮幾何中,擾動在界面兩側的發展是不對稱的,在弱非線性階段,不穩定性向內發展的部分受到慣性力的擠壓,而向外發展的部分受到慣性力的拉伸。Compared with traditional numerical methods such as the fem, fdm, etc, the lb method has several important features, including : simplicity in algorithm, easily programming, direct calculation of pressure from a state equation and amenability to simulate all kinds of flow field with complex boundaries, it also has much advantage in the respect of parallel computation because of its regional evolution
與傳統的計算方法如fem 、 fdm等相比, lb方法具有演算法簡單、編程容易、壓力可以通過狀態方程直接求解、能夠模擬各種復雜邊界的流場等優點,並且計算的局域性使其在并行計算方面也具有很大的優勢。This paper establishes a model simulating dam actual placing process and considering the non - continuity of initial temperature on the boundary of new and old concrete, daily air temperature change, concrete - placing temperature, hydration heat, heat insulation on boundary, water - storing process, placing intermission and curing with water. the calculation of stress field considers the concrete weight, static water pressure, thermal stress, different autogenous volume change between rcc and normal concrete, change of elastic modulus of concrete with age and creep action
考慮了乞今最為全面的初始條件和邊界條件,包括模擬壩體的實際升程過程,考慮了新老混凝土接觸面上的初始溫度不連續,逐日的氣溫變化,混凝土的入倉溫度,水化熱溫升,邊界保溫,水庫蓄水過程,澆築間歇以及灑水養生等因素;應力場的計算考慮了混凝土的自重,靜水壓力,溫度應力,常態混凝土與碾壓混凝土不同的自生體積變形,混凝土的彈性模量隨齡期的變化以及徐變的作用。Chapter two " impacts of china ' s accession to wto on retail industry " analyzes : the influence of accession to wto on domestic retail industry ; pressure from international business capital due to its advantages of capital strength, scale and advanced business pattern ; competition pressure from low profit criterion of supermarket business ; pressure from the management advantage of international business groups. chapter three " development strategy for retail industry after china ' s accession to wto " studies the development strategy for china ' s retail industry after accession to wto : formulating relevant laws and policies for foreign capital introduction as soon as possible ( asap ) ; working out plans for establishment of large - scale supermarket network asap ; developing multiple business patterns with mainstay business as the focus ; developing chain store business to bring about scale efficiency ; accelerating of modern enterprise institutional reform ; promoting scientific management level of retail enterprises ; setting up scientific and overall marketing concept, further strengthening sense of market orientation ; attaching greater importance on resources of talented persons and commodities ; making full use of information technologies, implementing e - commerce mode in retail enterprises ; actively exploring northwest china and developing new market
文章第二章「中國加入wto對零售業的沖擊」從中國零售業對外開放的歷史入手,簡要介紹了中國加入wto對國內零售業的影響,指出加入wto后,中國零售業可能面臨以下幾個方面的沖擊:國際商業資本在資金、規模和業態的先進性上所帶來的壓力;規模擴張壓力,即中國連鎖超市受到了投資規模擴張的資金壓力;超市行業低贏利水準的競爭壓力;國際商業集團在管理上的優勢對中國零售企業的壓力;新的管理理念、服務方式進入所帶來的沖擊;現代商業觀念的引進打破了中國商界固有的思維;國際經濟一體化程度的提高不斷促使中國零售業的絕對利潤和相對利潤下降;我國零售業網點的不足以及布局的不合理;零售業的信息革命所帶來的觀念沖擊。The results show that, comparing with the gas pressure drops calculated by the modified ergun equation, in the cases of the gas reynolds number is small, due to the presence of the dead space, the observed p in the experiments are bigger than that obtained by calculation, and when the gas reynolds number is large, because of the small interfacial viscous drag - force between gas and liquid, the p observed are smaller than that obtained by calculation
結果表明在氣相雷諾數較小時,由於停滯孔隙率的存在,實測壓降值比修正厄根方程計算的值大;氣相雷諾數較大時,氣液界面上產生的粘性曳力較小,實測壓降值比修正厄根方程計算的值小。From the late 1980s to the early 1990s, there occurred serious political disturbances in china, drastic changes in eastern europe and the disintegration of the soviet union. socialism in the world suffered serious setbacks. china was faced with unprecedented difficulties and pressure in its efforts to develop the socialist cause
二十世紀八十年代末九十年代初,國內發生嚴重政治風波,東歐劇變蘇聯解體,世界社會主義出現嚴重曲折,我國社會主義事業的發展面臨空前巨大的困難和壓力。In the paper we mainly researched space gainp2 / gaas / ge high efficiency tandem cells " making process by home - made low pressure mocvd technology and new solar concentrators. firstly, we presented reseached and development of solar cells in china and foreign countries ; secondly, on the basis of fundamental priciples and theories, we discussed some factors of influcing conversion efficiency of solar cells, and analysed the i - v output feature of two - junction tandem cells ; then the design concept of gainp2 / gaas / ge two - junction tandem cells was discussed, the detailed aspects of gainp2 / gaas / ge tandem cells epitaxy growth by low pressure mocvd was studied, and some questions on epitaxy growth ( such as crystal qualities, interface stress, element interdiffusion, n - and p - type doping et all ) were solved ; after that, the cell fabrication process was described ; finally, we reseached the hot pressing and mould process technology of an arched line - focus fresnel lens made by pmma, designed and fixed new solar concentrators
本文致力於用自製的低壓mocvd裝置進行cainp _ 2 / gaas / ge空間用高效級聯太陽能電池製作的工藝以及聚光太陽能電池組件的研究。首先,介紹了國內外太陽能電池的研究現狀及應用情況;其次,運用太陽能電池基本原理討論影響電池轉換效率的因素,分析了級聯電池的伏安特性;隨后,討論了cainp _ 2 / gaas / ge雙結級聯電池的結構設計理念,研究了採用低壓mocvd技術生長cainp _ 2 / gaas / ge級聯太陽電池材料的工藝過程,解決了異質材料生長的結晶質量、界面應力、材料互擴散以及材料n 、 p型摻雜等一系列問題;然後總結了級聯電池的后工藝製作;最後,研究了以pmma為材料的菲涅耳線聚焦透鏡的熱壓成型工藝及其模具的加工工藝,設計並安裝完成新型聚光太陽能電池組件。The strength of fibre - matrix interfacial bonding affects the overall composite strength and mode of failure, and the critical fibre length
界面壓焊影響總力和失敗模式,及有關纖體長度的纖維基的力。In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation
本文分別用守屋的保角變換法和基於源匯渦分佈的面元法,建立了計算槳葉表面壓力分佈的數學模型;應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法,建立了計算機翼表面邊界層內部流動的數學模型;應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法,建立了槳葉表面二相流流動的計算方法和相應的計算機程序。Faced with economic restructuring and drastic changes in the social environment, the social work sector has been doing a remarkable job under enormous pressure
近幾年來,面對經濟轉型和社會環境急劇變化,社工界的壓力更大,但仍然表現出色。分享友人