熱傳導率 的英文怎麼說
中文拼音 [rèzhuàndǎolǜ]
熱傳導率
英文
heat conductivity-
Thermal conductivity varies for different gases.
熱傳導率因不同氣體而異。The temperature rise at the center of a massive concrete wall is calculated by using the adiabatic rise of temperature and heat conduction equations of concrete based on the equivalent time, and considering effects of temperature on the hydration heat reaction ratio and creep characteristics of early - age concrete
摘要基於等效時間的混凝土絕熱溫升、熱傳導方程,考慮溫度對早期混凝土水化熱化學反應速率和徐變特性的影響,計算了大體積混凝土墻中心的溫升。The temperature effect which has been calculated is taken as " thermal load " forced on the body, then such thermal stress is settled as general elasticity mechanics question ; secondly, the thermal stress is taken as " surface force " forced on the body, and the new system stiffness is formed which include the extra stiffness matrix, then it changes the nature frequency of the structure
首先,這篇論文介紹溫度場和熱應力場的有限元方法,建立了三維熱傳導模型計算有溫度場產生的熱應力,計算熱應力時運用了一種轉化思維:將溫度處理為「溫度載荷」 ,這樣就能用彈性力學問題的處理方法來求解熱應力。其次,將熱應力作為結構的「面內力」 ,而面內力產生附加的幾何剛度矩陣,改變了結構的剛度,影響了結構的固有頻率。Zro2 fibrous cloths are characterized by their high melting point ( 2600 ), high - temperature resistance ( 2200 ), oxidation - corrosion resistance, quick absorbing alkaline, high alkaline absorption, and low heat - conductivity and resistivity, etc. zroi fibrous cloths that can be used as the nickel - hydrogen battery separators were first developed by using precursor process at home
氧化鋯纖維布具有熔點高( 2600 ) 、耐高溫( 2200 ) 、抗氧化、耐腐蝕、熱傳導率低、吸堿速度快、吸堿率高、面電阻小等特點。The experimental results showed that the substrate of pyroelectric sensor could significantly affect the detectivity. the porous silicon dioxide and pet plastic film substrate could effectively decrease the thermal conduction and the thermal fluctuation noise of the pyroelectric element, increase the voltage responsivity and the detectivity obviously
結果表明,多孔氧化硅和pet塑料可有效降低熱釋電元件的對外熱傳導,明顯提高傳感器的電壓響應率和降低熱釋電元件的熱噪聲。Thermal conductivity of petroleum liquids
液體石油的熱傳導率Test method for thermal conductivity of plastics by means of a transient line - source technique
利用瞬間線性源技術測量塑料熱傳導率的試驗方法Standard test method for determination of the thermal conductivity of anode carbons by the guarded heat flow meter technique
用防護熱流量計技術測定陽極碳熱傳導率的標準試驗方法Test methods of thermal diffusivity, specific heat capacity, and thermal conductivity for fine ceramics by laser flash method
激光閃爍法測定精細陶瓷的熱擴散率比熱容量熱傳導率試驗方法The undisturbed ground temperature of the seasons " transitional days in chongqing and the chart of some kinds of material ' s heat conductivities are given in the appendix a and appendix b
在附錄中,我們還給出了重慶地區季節過渡日的大地原始溫度圖及各種材料的熱傳導率圖。Due to good chemical stability and electrical resistivity, high thermal conductivity and mechanical intensity, wide band gap and low thermal expansion coefficient, aln thin films can be applied for insulating chips for semiconductor devices with high power, thermal dissipation lagers for large and super - large scale integrated circuits, insulating layers or passivation layers for semiconductor
超薄鋁膜由於其特殊的的光學性質,在光學多層膜上有廣泛應用。氮化鋁薄膜化學穩定性高、熱傳導率高、機械強度高、電絕緣性能佳、高能隙、熱膨脹系數低,光學特性優良,可以用作大功率的紫外光學器件的散熱材料。It presents a mathematical heat transfer model of air and soil temperature in greenhouse basing on the theory of transmission of heat. the model calculates the heat diffuse coefficient of soil by difference method and establishes regression equation on experimental data by sas
基於傳熱學的熱傳導方程,利用測試的地溫數據,選用差分法計算了土壤熱擴散率,應用sas軟體擬合了非線性方程,建立了日光溫室土壤溫度場的數學模型。The laser heats up the diamond and causes the temperature rises on the surface of diamond film. at the different temperature, the different physical and chemic change will happen. the rules of the laser ablating diamond were researched by experiment
從激光加熱和熱傳導的理論出發,研究了激光傳熱及其在金剛石表面引起的溫度分佈情況,以及在不同的溫度和激光功率下,金剛石膜發生的不同的物理和化學變化。The heat sources are analyzed in theory and calculated under some hypothesis. a thermal conductive model is built and by solving the model equation, the numerical values of the 1 - active region laser, 2 - active region laser, 3 - active region laser and 4 - active region laser are obtained. the dynamical temperature distribution plots are obtained, too
在一定的假定條件下對其內部的熱產生率進行了定量計算,並分別針對一、二、三、四有源區激光器建立了熱傳導模型,得出數值解,畫出激光器內部瞬態溫度分布圖,推導了激光器連續工作條件。In chapter four, in our experiments, we selected four representative mould steels as samples. after laser heat treatment, the hardness of samples was measured by special instrument, microstructure was also photographed to be analyzed carefully. through these experiments, we also debated on the theories which explain the new phenomenon occurring in laser overlapping treatment
第二章:介紹了工業中的各種激光加工技術和激光加工系統,詳細說明了本實驗所使用的高功率激光加工系統;第三章:詳細敘述了激光淬火的機理和熱傳導數學模型;第四章:通過實驗,分析激光淬火后的模具鋼的硬化帶的硬度分佈及金相組織特性,同時對激光交疊熱處理的特點及形成機理都作了深入的探討。The formulas for calculating transmit drying rate and emitting drying rate were also established based on the theory of heat transmit and heat emitting
利用熱傳導和熱輻射理論,分析建立了盤式乾燥機的傳導乾燥速率和輻射乾燥速率計算關系式。The demonstration of heat - transfer measuring techniques and prospect of infrared thermal mapping techniques, main parts and performance indexes of a infrared camera, functional blocks and implementation of infrared processing software, experimental facility and measuring system of the wind tunnel has been made. the model emittance was experimentally determined and the three methods correcting directional emittance were compared. those problems of the infinite - slab model thickness and constant wall heat rates hypothesis, the determination of adiabatic wall temperature were discussed in a 1 - d heat conduction analysis
本文對紅外熱圖測熱技術與應用前景、紅外熱像儀主要部件與性能指標、紅外測熱數據處理軟體功能模塊與實現、風洞試驗設備與測量系統等進行了論述,測量了模型表面發射率並對發射率隨極角變化的三種修正方法進行了對比,對一維熱傳導分析中模型壁厚半無限假設、壁面熱流定常假設、絕熱壁溫選取等進行了探討。The article set up 2 - dementional steady heat conduction model and equations based on buried channel waveguide, and solved the equations by separating variables method. using mathcad, 2 - d temperature distribution and the influenced refractive index distribution by thermo - optic effect were plotted in waveguide section area
本文先以埋入式溝道波導為例,建立了二維穩態熱傳導方程模型,用分離變量法推導了方程解,並用mathcad2000在波導截面上繪出了二維溫度分布圖和受到熱光效應影響的折射率分布圖。Fractal porous media can be simplified as a kind of binary mixture with different thermal conductivities. the calculated results show that heat transfer in fractal porous media is very complicated, the thermal coupling effect of matrix with pore structure is studied. when heat transfer in pore structure is neglected, the effective thermal conductivity for random sierpinski carpet is scaled up with the percent of matrix, which is described by the classic archie ' s law
本文首先採用有限容積法分析了分形多孔介質中的熱傳導過程,多孔介質可以視為二元混合介質,計算中發現分形結構中的導熱規律非常復雜,基質與孔隙之間存在著很強的相互換熱,當不考慮孔隙氣體中的導熱時,本文所構造的隨機sierpinski地毯上導熱系數與基質率(基質百分含量)大多呈指數關系,這與archie定律的結果是-致的。The influence of these irreversibilities on the performance of an absorption refrigerator whose working fluid flows continuously is investigated. the optimal relation among the coefficient of performance, cooling rate and overall heat - transfer area of the refrigerator is derived, from which some important performance bounds of the refrigerator are determined
這些不可逆性對工質作連續流動的吸收式製冷機性能的影響被揭示,並導出了製冷機製冷系數、製冷率和總熱傳導面積間的優化關系,由此確定了製冷機的重要性能界限。分享友人