自熱擴散 的英文怎麼說

中文拼音 [zìrèkuòsǎn]
自熱擴散 英文
self thermal diffusion
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 擴 : 動詞（擴大） expand; enlarge; extend
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  1. Combined heat and mass transfer by natural convection which is caused by heat and mass diffusion can be seen in nature and some processes of industry, such as evaporation and desiccation. these processes relate to aeronautics, hydraulics, mechanics, chemical engineering, oceanography and aerography

    熱及物質擴散引起的傳熱傳質復合自然對流常見于自然界和蒸發、乾燥等工業過程，涉及到航空、水利、機械、化工、海洋、氣象等諸多領域，其流體力學和傳質傳熱特性一直是人們研究的重點。
  2. 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。
  3. Along with the wave of information and globalization, human being society has already stepped into the knowledge society. the knowledge society is based on the production, distribution and utilization of knowledge and information. in the new era, knowledge increasingly becomes important and to be the most sinificant resource successive to land, labor and capital, which desides the business competitive advantages. for this purpose, enterpris - es have to divert their attention to the resouce of knowledge to get advantages over others in competition in the knowledge economy. in the knowledge economy society, as the dynamic source of the enterprises " innvation, knowledge has become the most scarce resource. it is up to present knowledge storage of firm whether it can catch more opportunities and ways of resource allocation, which contributes to competitive advantages. therefore, the more and the newer knowledge is grasped and invented, the more competitive advantages can be seized. furthermore, enterprises have to maintain their sustainable capability of competition on the ground of assurance that enterprises can effectively manage the process of innovation, inspiration, disseverance and application of knowledge. thus, it is the focus of scholars in the knowledge economy to find the mechanism how knowledge plays its role in business, and to make in - depth researches on the way of knowledge development diversion, dissemination and the law of knowledge

    因此，誰掌握了最新的知識，誰掌握了更多的知識，誰發明和創造了更新的知識，誰生產了包含更多知識的使用價值，誰就能在未來的競爭中取得優勢地位。進一步地，企業為實現持續競爭力，必須以知識的持續積累為條件，以對企業自身所擁有知識從發明、激活、擴散和應用整個過程的有效管理為根本保證。為此，把握知識在企業中發揮作用的微觀機理，對企業開發、轉移、擴散、利用知識的方式和知識管理規律進行深入研究，成為知識經濟時代學者們關注的熱門前沿。
  4. A two - dimensional double diffusive laminar natural convection in rectangular enclosure is detailed analyzed. the results show that when the thermal and solutal buoyancies aid each other, the airflow consists of one main cellular structure and is steady, regardless of the relative strength variation between the heat and pollutant sources. there are multiple flow structures, however, according to the relative strength when the buoyancies opposing each other

    模擬結果表明雙擴散自然對流系統的空氣流動與傳熱傳質特性完全是由離散熱源與污染源浮升力之間的相互作用關系訣定的：當離散熱源與污染源浮升力協同作用時，自然對流呈比較穩定的單一流動結構；而當熱源與污染源浮升力對抗作用時，自然對流系統隨它們之間強度變化呈現出多種流動狀態。
  5. The activation energy of the tpl peak is calculated being about 1. 5 ev for four heat treated samples ( furnace cooling, air cooling, dry ice quenching, liquid nitrogen quenching ), and it is near the self diffuse activation energy of aluminum 1. 45ev

    爐冷、空冷、乾冰冷和液氮冷四種熱處理制度根據幾，峰峰溫數據計算的激活能的結果約為1 ? sev ，接近於鋁的自擴散激活能1 . 45ev 。
  6. The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion

    分子擴散運動兩種或更多種物質的分子由於隨機的熱運動自發混合在一起
  7. At same time macroscopical and microcosmic mathematical model of nitridation are investigated. in this paper the thermodynamics of direct - nitridation, effect of temperature and nitrogen ambience on nitridaton and self - diffusion are discussed in the theory of physical chemistry in detail

    同時本文用物理化學的原理討論了矽片氮氣直接氮化的熱力學方程、氮化條件的理論根據和原子的自擴散，從理論上證明隨溫度升高氮化加劇，氣氛純度越高氮化越容易的結論。
  8. During the course of ball milling, there was a rise of temperature, which accord with the value of theory well and proved that there was a exothermic reaction which happened suddenly and completed soon. this ball milling reaction was a sudden and fast self - propagating reaction, not a gradually diffusing reaction

    在球磨過程中，檢測到有溫度突然升高的現象，而且與理論計算值符合很好，可以證明球磨時存在一個突然發生、瞬間完成的放熱反應；該球磨反應的是一個突然爆發的自蔓延反應，是瞬間合成過程，而不是一個逐漸擴散的反應過程。
  9. The effects of interfacial resistance, superheating, free convection due to both temperature and concentration gradients, mass diffusion and thermal diffusion, and variable properties in both the liquid and gas - vapor regions were considered

    分析中，考慮了相間阻力、液膜波動、蒸汽過熱度、因溫度和濃度梯度引起的自然對流、質擴散和熱擴散以及物性的變化。
  10. With the finite - difference method, self - consistent solutions for the possion ' s equation, injected current density, carrier concentration, optical field and thermal conduction equations have been realized to study the thermal - field properties, the coupling of electricity, thermal and optical - fields, and the influences of n - dbr and double oxide - confining regions on the characteristics of vcsels

    本文建立了一個直接耦合的準三維理論模型，通過有限差分法求解泊松方程、載流子擴散方程、熱傳導方程和光場方程的自洽解，研究了vcsel的熱場分佈特性，並實現了電、熱和光場的耦合，同時考慮了n - dbr及雙氧化限制層對vcsel特性的影響。
  11. This part emphasizes the synthesis of nanoarrays, aiming at controlling the size and distance of nanocrystallites using calixarene derivatives by altering the size, length and chemical structure of the organic molecules ; 2. this part emphasizes in situ synthesis strategy for fabrication of polymer network of zns based nanopowder, aiming at size controls, coating and preventing agglomeration following " one - pot " synthesis ; this method fits to low cost, large scale production ; 3. according to development in zno nanomaterials, we first report on the synthesis, characterization of amorphous zno, aiming at describing the principles and approaches of synthesis techniques, optical properties, spatial structure and doped effect ; the amorphous zno displays cage - like structure, showing a strong ultraviolet emission while the visible emission is nearly fully quenched, a potential uv - emission material ; 4

    本論文以量子結構自組裝為出發點，提出利用杯芳烴及其衍生物的化學受限反應實現尺寸可調半導體納米粒子自組裝；提出有機聚合網路原位組裝zns基納米熒光粉方法，把熒光粉的納米化、包敷、防團聚在「一鍋」反應中完成，適于低成本，批量生產；根據當前zno的研究情況，我們首次合成了非晶zno ，研究了它的光學性質，確定了它的結構，並對其摻雜進行了初步的研究，非晶zno表現出強的深紫外發光特性，而可見發射非常弱，是一種有巨大潛在應用價值的深紫外發光材料；利用非晶zno的亞穩特性，對晶化過程中非晶zno納米晶zno三維受限量子結構特性，界面特性進行了深入的研究；利用固相熱分解一般受擴散控制特性，實現了尺寸可控的zno三維量子結構的自組裝；利用非晶zno的高度分散性，容易均勻成膜特性，實現了非晶籽晶誘導低溫液相外延自組裝生長高取向zno晶體薄膜。
  12. In the second part, the reliability research on electronic packaging was concentrated with finite element method ( fem ) on moisture diffusion in plastic materials, die cracking of flip - chip with no - flow underfill and thermal performance of high power electronic components. in the last chapter, the design tool for advanced electronic package was studied. the main conclusions in the second part are as follows

    論文第二部分電子封裝可靠性研究包含對塑封材料中水汽擴散研究、填充不流動膠的倒裝焊晶元可靠性研究以及大功率器件散熱問題研究三方面內容，最後為實現封裝設計標準化和自動化，研究了若干最主要的電子封裝構型的參數化有限元建模、加載和相應的求解方法。
  13. The characteristic of combined heat and mass transfer by natural convection has been the focus of researches for a long time. numerical analysis is conducted for combined heat transfer and mass transfer by natural convection on inclined surface. effects of the inclination angle and the ratio of buoyancies due to heat diffusion and mass diffusion on fluid flow and heat and mass transfer characteristics have been investigated for pr = 0. 7 and sc = 0. 05 - 5. 0

    本文採用數值計算方法研究了傾斜平面上的傳熱傳質復合自然對流，求解了動量、能量及質量的完整方程，考察了熱質擴散共存時傾斜平面上的流動和傳熱特性，著重分析了熱浮力及物質擴散浮力之比b和傾斜角度對流體流動和傳熱傳質特性的影響。
  14. Two sources of si were identified. one was from the sif62 - ions, which were formed by a reaction between the treatment solution and quartz substrate. the other was attributed to the diffusion of si from the surface of quartz substrate into tio2 thin film at 700 c or higher calcination temperatures

    薄膜中的si元素來源於二部分，其中一部分來源於反應液與石英玻璃基片反應所生成的[ sif _ 6 ] ~ （ 2 - ）離子，另一部分則來自於薄膜在高溫熱處理（ 700或高於700 ）過程中從石英玻璃表面擴散到薄膜中的si元素。
  15. Abstract : a numerical model and experiments over pmma are used to evaluate the main assumptions used in the theoretical description of a diffusion flame established in a natural boundary layer. flow characteristics ( 2 - d boundary layer ) and surface thermal balance are identified as the critical assumptions to be evaluated. comparison of experiments, numerical results, and theoretical model serve to validate the assumptions leading to the definition of a mass transfer number but establish the need to model all three - dimensional features of the flow

    文摘:對pmma進行數字模擬和試驗，對描述自然邊界層擴散火焰理論的假設進行評價.我們把流動特性（二維邊界層）和表面熱平衡作為評價的關鍵假設.試驗、數字模擬和理論模型證實了對質量傳遞數值定義的假設是正確的，但研究也表明，有必要對流動特性進行三維模擬
  16. Since the novel m41s mesoporous materials ( particularly mcm - 41 ) was firstly reported by mobil ' s researchers, much attention has been paid to this kind of materials. they have not only larger surface area, uniform pore structure and huge pore volume, which can reduce bottleneck phenomenon in molecular diffusion, but also higher mechanically and chemically stability as new inorganic materials. these materials have been widely used as catalysts, sorbents and separation materials as they were synthesized firstly

    介孔材料作為一種新型功能材料，由於其具有較大的比表面積、長程有序的孔道結構、較大的孔容、良好的擴散性能和能夠減小分子擴散中的瓶頸效應等特點，以及作為無機材料所具有的機械和熱穩定性，所以自1992年mobil公司開發研製了以mcm - 41為代表的m41s系列介孔材料以來，被廣泛應用於催化、吸附和分離等領域。
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