导热的
- 与 导热的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The proposed method has the merit that the numerical characteristics of stochastic temperature field response can be obtained by analyzing the random temperature field just in one time.3. Perturbed numerical algorithm of nonprobabilistic convex set theoretical models on the temperature fieldThe uncertain parameters of physical parameters and initial boundary conditions of heat conduction are described by the convex model. The perturbation formulas of the upper and lower bounds of temperature field response with unknown-but-bounded parameters are given via the combination of matrix perturbation theory and the convex set theory model.4. Numerical analysis for transient temperature field with interval parametersConsidering the uncertainties of the transient heat transfer, the physical parameters and initial boundary conditions are regarded as interval variables.
该方法具有只进行一次随机温度场分析便可以获得其响应的数字特征的优点。3、温度场的非概率凸集合理论模型的摄动数值解法将结构导热的物理参数、温度场的初始和边界条件等不确定性参数以凸模型加以描述,基于矩阵摄动理论和处理不确定问题的凸集合理论模型的结合,导出有界不确定参数瞬态温度场响应所在集合的上、下界摄动计算公式。4、具有区间参数的瞬态温度场数值分析考虑结构瞬态热传导问题的不确定性,将结构各物理参数和温度的初、边值条件均视为区间变量。
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Acropolis HTF; Appellation Logo HTF; Champion Gothic HTF; Chrysler HTF; Deseret HTF; Didot HTF; Ehmcke HTF; Fetish No. 338 HTF; Gestalt HTF; Gotham HTF; Gotham Rounded HTF; Hand Cancelled HTF; Historical HTF; Hoefler Text HTF; Hoefler Titling HTF; Knockout Series A to G HTF; Leviathan HTF; Mercury HTF; Numbers; Odeon Condensed HTF; Requiem Unlocked HTF; Saracen HTF; Schneidler Titling HTF; Today Statoil; Verlag HTF; Whitney HTF; Whitney Index HTF; Whitney Numeric HTF; Woodtype Antique XXXCond HTF; Woodtype Gothic Extended HTF; Ziggurat HTF
雅典卫城导热油;称谓标志导热油;冠军哥特式导热油;克莱斯勒导热油,犹他州导热油,迪多导热油,埃姆克导热油,恋物癖第338号导热油,塔导热油,世界街头导热油;世界街头圆导热油;手取消导热油;历史导热油;赫夫勒文本导热油;赫夫勒字幕导热油;淘汰赛系列A至G导热油;利维坦导热油,水星导热油;数;国宾简明导热油;安魂曲解锁导热油;萨拉森导热油;施奈德勒字幕导热油;今天挪威国家石油公司,出版社导热油;惠特尼导热油;惠特尼指数导热油;惠特尼数字导热油; Woodtype仿古XXXCond导热油; Woodtype哥特式扩展导热油; Ziggurat的导热油
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A computer data acquisition and treating system was used in the hot-wire heat transfer device to measure thermal conductivity of nonmetallic materials.
根据目前应用的热线导热仪存在的问题,提出将计算机数据采集与处理系统应用到热线导热仪上测量非金属材料的导热系数,提高导热仪的测试精度和再现性。
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The work had been carried out can be summarized as follows: 1. Thermal cycle analysisBased on the classical thermodynamics, influence of isobaric reheat and isovolumetric reheat on cycle output is discussed. Based on the finite time thermodynamic theory, the thesis discusses the optimization of Rankine cycle, Brayton cycle and Stirling cycle between constant temperature heat source and constant temperature heat sink or between variable temperature heat source and constant temperature.
第一、循环优化分析:采用经典热力学研究了等压再热与等容再热对循环功的影响;采用有限时间热力学深入研究了恒温热源一恒温冷源和变温热源一恒温冷源液氮发动机朗肯循环、布雷顿循环和斯特林循环的优化和对比;着重研究了工质导热率与热机换热器总导热率之比对循环性能的影响、高温侧换热器导热率与低温侧换热器导热率之比对循环功率的影响等内容;得到了一些对循环和系统设计具有现实指导意义的结论。
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In this paper mainly predictive expressions for porous materials are described.The thermal conductivities of rock wool and calcium silicate insulating materials havebeen calculated by these expressions,however,it has been found that there is somedeviation of calculated values from measured data for these insulating materialscontaining structural water.The effect of the structural water on thermal conductivityhas been studied by means of TG-DTA curves of rock wool and calcium silicateinsulating materials,and...
本文介绍了预测多孔材料导热系数的主要计算方程,通过岩棉保温材料和微孔硅酸钙保温材料导热系数的预测,指出这些方法在预测含有结构水的微孔硅酸钙保温材料导热系数时,与实测值会有较大的偏差,进而利用岩棉和微孔硅酸钙保温材料热重和差热曲线,研究了材料结构水对其导热系数的影响,提出了预测含有结构水的多孔材料导热系数的修正方法,其结果与实测值相当吻合。
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In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.
为了解层板再生冷却推力室在传热上的基本特征,第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题,建立了层板再生冷却推力室二维流固耦合传热过程的数理模型,采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题,从而避免了流-固区域之间的反复迭代,大大缩短了计算时间。
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Different compound adsorbents thermal conductivities were measured at different adsorption capacities.It got these conclusions: At the same adsorption capacity,the compound adsorbents thermal conductivities increase with the quantities of the silicate sol contents increase.The compound adsorbents thermal conductivities increase sharply during the silicate sol contents vary between 0%~(7.5%).The therm...
试验结果表明:在同一吸附量的情况下,导热系数与其添加的粘结剂含量正相关,并且在w=0%~7.5%的添加粘结剂范围内导热系数随着粘结剂含量增加而显著增加;13X沸石原粉、复合吸附剂样品Z1和Z2的导热系数随其吸附量增加呈近似线性增长,当吸附量从0%增加到25%时,各吸附剂导热系数均增加了150%以上;配置出复合吸附剂Z1和Z2在分别添加w=5.0%和7.5%的添加剂下,平均导热系数分别为0.183和0.199 W/,比13X原粉分别提高65.4%和80.1%;将配置的复合吸附剂Z2应用于太阳能冷管,其制冷系数COP约为
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In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.
文中研究了25~100℃范围内,气干木材的导热系数与含水率、密度、孔隙率、温度及热流方向的关系,研究表明:木材导热系数与密度成正比关系,与孔隙率成反比关系:对于针叶材,导热系数与密度及孔隙率成线性变化关系,而对于阔叶材其变化关系近似成二次曲线;气干木材的导热系数随着温度的升高近似呈线性增加:热流平行于纹理方向的导热系数大于垂直于纹理方向的导热系数,两者的比值大约在1.8~2之间。
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The research result indicates that the thermal conductivity of the Cement PO42.5 is slightly higher than that of the PO32.5 and the thermal conductivity of the borehole backfills increases when the sand size increases,and that contained quartz sand is higher than river sand.At the same time,the thermal conductivity of the borehole backfills increases firstly and then decreases and the consistency decreases when the bentonite content increases.
研究发现:PO42.5水泥的导热系数稍大于PO32.5的导热系数,回填材料导热系数随砂子粒径的增大而增大,骨料为石英砂的回填材料导热系数要明显大于骨料为河砂的导热系数;同时回填材料的导热系数随膨润土含量的增加先增加后减小,回填材料的流动性随膨润土含量的增加有所降低。
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For the tungsten-copper metallic matrix composites having tailorable TC and CTE properties in certain range, this investigation aims at with discussion of composition design, preparing methods selection and process parameters optimization to develop the key technology of W/Cu composites materials processing.
鉴于钨铜金属基复合材料具有低膨胀及高导热的优异特性,并且上述性能在一定范围内可实现调节控制的特点,故本研究旨在通过成分设计、制备方法选择及工艺参数优化的深入探讨,研究其关键的制备技术并制备符合封装热沉要求的材料。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。