散熱系數 的英文怎麼說

中文拼音 [sǎnrèxìshǔ]
散熱系數 英文
coefficient of heat emission
  • 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
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 散熱 : heat radiation; radiating; thermolysis; abstract heat; heat dissipation; cooling散熱風門 throttle...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. The relationship between the volume frac tion, distribution, shape of dispersoid and the normal, elevated temperature mec hanical properties of aluminum alloys is outlined briefly in this paper

    簡要概述了彌散相的數量、分佈、形狀等和耐熱鋁合金常溫和高溫力學性能之間的關系。
  2. Firstly, the surface characteristic of polystyrene particle is changed from water detesting to water intimity by using special techniques and admixtures so mat the compound quality with inorganic materials is insured. secondly, the contradiction between the weight and strength is solved through optimizing the particle size and using composite fiber and the best heat conductivity is achieved under the condition that the necessary strength is met. in the research process, the author solved the problem of fiber dispersing in insulating materials so that the contraction of the material is controlled

    課題研究中，首先採用特殊的改性工藝及外加劑實現對聚苯乙烯顆粒表面的成功改性，使其表面由憎水轉化為完全親水，確保與無機材料的復合質量；其次，通過採用優化骨料級配及使用復合纖維等措施解決了保溫材料的輕質與強度的矛盾，使保溫材料在滿足必要的強度的前提下，導熱系數降至最小；並且，課題研究中成功解決了纖維在保溫材料中均勻分散的問題，達到了抑制保溫材料收縮的目的；最後，通過採用復合外加劑、合適的膠凝材料及合理的配比等措施確保該保溫材料具有良好的和易性，滿足施工的要求。
  3. Standard test method for thermal diffusivity of carbon and graphite by thermal pulse method

    用熱脈沖法測定炭和石墨的熱擴散系數的標準試驗方法
  4. Thirdly, the paper discusses the driver of the peripheral equipment, how to port the uc / os - n and uclinux, h. 323 protocol and the application of the system in the digital speech classroom. also some software and hardware measure are adopted to enhance the system stability. at last, the shortcoming and the something to be improved are given. dsp can be used to realize real - time speech coding algorithm, and after porting ( ac / os - n, arm can manage the keyboard, the lcd and the ethernet peripheral etc. then the embedded network system with specific purpose can be used in others fields, such as pda, set of top, web tv, ect

    在實際設計實現中，為提高系統軟、硬體整體穩定性和可靠性，使用了以下幾種方法： （ 1 ）低電壓復位、抗電源抖動能力、增加時鐘監測電路、抗電磁干擾能力、散熱等技術； （ 2 ）多層pcb設計，線路板結構緊湊，電源部分採用數字5v 、 3 . 3v 、 3v 、 1 . 8v和模擬5v多電源供電； （ 3 ）選用表面貼和bga封裝的器件； （ 4 ）按照軟體工程的要求進行系統分析，規劃系統框圖、流程分析、模塊劃分，減小了不同模塊的相關性，從而最大限度避免了錯誤的發生。
  5. The samples were welded at 800, 900. d _ ( cu ) and dni at contacting line increased with increase of welding temperature. and atom diffusion at contacting line welded by bpec heating was much quicker than by radiation heating

    其它條件相同時，改變裝模方式以獲得不同的加熱條件和電場條件，結果表明，無模套時接觸面處cu和ni的擴散系數比有模套時大。
  6. The third model was designed to investigate atom diffusion at contacting point. fe was sintered at 500, 550 > 600, 650 > 700 under bpec and radiation heating. the test results of image processing indicated that the average pore size took on wavelike with temperature under bpec heating

    脈沖大電流加熱條件下，其它條件相同時，分別在800 、 900的溫度武漢理土大學碩士學位論文下擴散連接cu絲和ni絲，結果表明接觸線處cu和ni的擴散系數隨溫度的升高而增大。
  7. A transfer model is established, which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains. the model has simulated surface heat flux, surface temperature, temperature profiles, height of mixture layer and so on. and the differences between urban area, suburban area and rural area have been compared. this model mainly depends on the parameters below : surface albedo, surface roughness coefficient, moisture available coefficient of soil, thermal capacity and thermal diffusion coefficient of errain, cloudage. the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day. parameters used in this model aim at beijing city, and the time is at the beginning of september. to other cities, or other time, the parameters should be adjusted accordingly. in addition, being adjusted, the model can also be used for other homogeneous and inhomogeneous terrains

    模式主要依賴于以下參數和物理量：地面反照率下墊面粗糙度土壤的可含水量下墊面的熱容量和熱擴散系數雲量等參數。結果表明，本模式能合理地模擬不同地表熱量平衡地表氣溫混合層高度湍流交換系數湍流動能位溫廓線等，以及它們的日變化。該模式所取參數主要針對北京市，時間為九月初，對于其他城市，參數應作相應的調整。
  8. The chosen controlled parameter must be single function of extraventricular temperature because extraventricular temperature affect immediately radiator ' s emitting heat, heat net supplying heat and user ' s heat load. but the sometime chosen controlled parameters all are ' t extraventricular temperature ' s single function

    室外溫度的變化直接影響用戶熱負荷、散熱器散熱量、熱網供熱量的大小，所以選擇的被控參數應與室外溫度有單值函數關系，而以往所選的被控參數與室外溫度之間都不是單值函數關系。
  9. The effects of the fabrication conditions on the crystal structure, grain size, micromorphology and electrochemical performance of these materials have been studied in depth. the reaction mechanism of the low - heating solid - state reaction method has also been investigated. in addition, a novel electrochemical method ( rpg method ) based on the concept of " ratio of potentio - galvano - charge capacity " has been for the first time developed to determine the diffusion coefficient of lithium - ion within insertion - host materials on the basis of the spherical diffusion model

    本論文較系統地考察了低熱固相反應法合成鋰離子電池正極材料的可行性問題，研究了工藝條件對材料的晶體結構、晶粒尺寸、微觀形貌及電化學性能等的影響，探討了低熱固相反應的機理，並通過引進「恆壓-恆流充電容量比」的概念，給出了一種測定鋰離子嵌入脫出固相擴散系數的新方法。
  10. In the forth chapter, the sl threshold pressures for bubbles with different noble gases were measured experimentally. results show that the threshold pressure increases with the decrement of molecular mass for gases inside the bubbles

    氣泡內的惰性氣體不同使氣泡內的絕熱系數和熱擴散系數不同，惰性氣體的原子質量越大，氣體的絕熱系數就越大而擴散系數就越小。
  11. For better veracity of simulating model, model is used lookup - table module to calculate the thermodynamic character of refrigerant, and datas of experience and test is combined in the compressor module, also the coefficient of heat transfer changing by running parameter is decided by computational procedure. in addition, choosing congruence step size solves the divergence of simulation procedure

    為了使模擬模型具有相當的準確性，模型中採用查表模塊進行製冷劑熱力性質計算，壓縮機模塊中將實驗數據與經驗計算數據相結合，通過程序運算確定冷凝器和蒸發器傳熱系數與運行參數之間的關系，並成功解決了模擬程序運行發散的問題。
  12. The dissertation analyzes comprehensively the present researches and problems about the high power crosscurrent co2 laser simulation. according to the classical heat - conduction theory, the dissertation establishes the mathematic model of the heat dissipation system of 2 kw crosscurrent co2 laser

    根據高功率橫流co _ 2激光器散熱系統結構原理，建立高功率橫流co _ 2激光器散熱系統數學模型，利用泰勒展開，將散熱系統數學模型離散化，使其形式與計算機圖形學中的水波演算法在形式上相似。
  13. Firstly, for jet array impingement cooling, the effects of the distance of adjacent holes, the impinging distance and jet reynolds number on heat transfer characteristic at the target wall are summarized under staggered holes arrangement and the same hole diameter. and then, the numerical simulation of inclined multi - hole film cooling has been studied. the influence factors examined in this case include blowing ratio and the distance of adjacent holes

    首先通過對射流沖擊冷卻方式的研究，分析了相鄰孔間距、沖擊間距以及射流入口雷諾數對沖擊靶面換熱系數的影響情況，然後對多斜孔冷卻方式進行了數值模擬，重點探討了吹風比和相鄰孔間距對絕熱溫比與壁面換熱系數的影響規律，最後，針對沖擊-發散復合冷卻流場的計算物理模型，研究吹風比、相鄰孔間距的變化對沖擊-發散復合冷卻流動與傳熱特性的影響。
  14. Therefore, the work presents a foundation for modifying heat release conduction and designing cooling installation

    結果表明，用所提出的方法計算減速器散熱系數符合實際，為改善散熱條件和設計冷卻裝置提供了依據。
  15. A new thermal probe method for determining thermal conductivity based on the minimal dispersion of thermal diffusivity

    據熱擴散率最小離散度確定導熱系數的新熱探針法
  16. Aluminum alloy matrix composite has a series of advantages such as low density, high specific strength and specific modulus, high wear resistance, low coefficient of expansion, high coefficient of heat conductivity and high cooling rate

    鋁基復合材料具有密度低、強度和模量高、耐磨損、膨脹系數低、導熱系數高以及散熱速度快等一系列優點。
  17. Abstract : the paper presents a theoretical study on the thermal conductivity of frost formation on cooled flat plate under forced convection. taking the porous meditum as a physical model of frost layer, according to the theories of heat and mass transfer, the formula on heat conductivty of frost formation is derived

    文摘:研究水蒸汽凝華結霜過程在冷壁上形成的霜層的導熱系數，依據隨機管子多孔介質霜層模型，假設霜層是由孔隙空間與冰晶骨架構成的多孔介質，其中孔隙空間由隨機毛細管及連接管子的接頭形成，濕空氣中的水蒸汽在霜層的孔隙空間中擴散輸運並凝華結霜，根據傳熱傳質學理論，導出霜層導熱系數關系式。
  18. And also meet experiment result well. the heat release from floor thought radiation is validated about 70 % by analyzing the surface coefficient of heat transfer with convection and radiation

    隨后，對低溫輻射地板上表面的對流換熱系數和輻射換熱系數分析結果表明地板表面輻射散熱量約佔地板表面總散熱量的70 。
  19. The condensation heat - exchange characteristic of a separate - type heat - pipe was studied on a 1 : 1 model. the heat pipe is heated by electricity, and working fluid is distilled water, and it is cooled by air. the experimental results show that, ( 1 ) when charging liquid ratio is 45 %, condensation heat - exchange coefficient reaches to maxium ; ( 2 ) when there is not non - condensing gas, the coeffcient decreases a little with the increase of vapour pressure, and it decreases by 9. 5 % when the pressure increases from 0. 16mpa to 0. 36mpa ; ( 3 ) when there is non - condensing gas, the coefficient decreases a little, but when the gas is discharged by an exhaust value, it can be improved, when the volume content of the gas is 2. 5 %, it can increased by 22 % ; ( 4 ) the effect of the non - condensing gas on the coefficient decreases with the increase of the pressure, and when the volume content of the gas is 5 % and the pressure increases from 0. 16mpa to 0. 36mpa, the coefficient increases by 6 %. the relative curves are given between condensation heat - exchange coefficient and air flowrate, charging liquid ratio and vapour pressure

    建立了空氣冷卻實驗臺，熱管的加熱方式為電加熱，工質為蒸餾水.在1 1模型上對分離式熱管管內凝結換熱特性、不凝性氣體對凝結換熱的影響及不凝性氣體的擴散規律進行了試驗，得出分離式熱管有一最佳充液率，其值為45 %左右；凝結換熱系數隨著蒸汽壓力的增加略有降低，在實驗的壓力范圍內，降低了9 . 5 % ；不凝性氣體對分離式熱管的凝結換熱僅影響冷凝段下部較小部分，通過排氣閥排出不凝性氣體可有效地改善冷凝段下部的凝結換熱；隨著壓力的增加，不凝性氣體對分離式熱管冷凝段的影響減少.這些結論可用於分離式熱管換熱器的工程設計和控制
  20. Abstract : the condensation heat - exchange characteristic of a separate - type heat - pipe was studied on a 1 : 1 model. the heat pipe is heated by electricity, and working fluid is distilled water, and it is cooled by air. the experimental results show that, ( 1 ) when charging liquid ratio is 45 %, condensation heat - exchange coefficient reaches to maxium ; ( 2 ) when there is not non - condensing gas, the coeffcient decreases a little with the increase of vapour pressure, and it decreases by 9. 5 % when the pressure increases from 0. 16mpa to 0. 36mpa ; ( 3 ) when there is non - condensing gas, the coefficient decreases a little, but when the gas is discharged by an exhaust value, it can be improved, when the volume content of the gas is 2. 5 %, it can increased by 22 % ; ( 4 ) the effect of the non - condensing gas on the coefficient decreases with the increase of the pressure, and when the volume content of the gas is 5 % and the pressure increases from 0. 16mpa to 0. 36mpa, the coefficient increases by 6 %. the relative curves are given between condensation heat - exchange coefficient and air flowrate, charging liquid ratio and vapour pressure

    文摘:建立了空氣冷卻實驗臺，熱管的加熱方式為電加熱，工質為蒸餾水.在1 1模型上對分離式熱管管內凝結換熱特性、不凝性氣體對凝結換熱的影響及不凝性氣體的擴散規律進行了試驗，得出分離式熱管有一最佳充液率，其值為45 %左右；凝結換熱系數隨著蒸汽壓力的增加略有降低，在實驗的壓力范圍內，降低了9 . 5 % ；不凝性氣體對分離式熱管的凝結換熱僅影響冷凝段下部較小部分，通過排氣閥排出不凝性氣體可有效地改善冷凝段下部的凝結換熱；隨著壓力的增加，不凝性氣體對分離式熱管冷凝段的影響減少.這些結論可用於分離式熱管換熱器的工程設計和控制
分享友人
分享到 Line

分享到臉書