查询词典 thermal
- 与 thermal 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Based on the early works, the C program language and the least square method were used to obtain the thermal viscoplastic constitutive equation.A mechanical thermal coupled model was created and DEFORM-2D was used to analyze the thermal and mechanical parameters' changing during the process of adiabatic shearing.
我们在所作的前期工作及国内外的研究成果的基础上,应用C语言程序实现了最小二乘法拟合热一粘塑性本构方程中待定参数的求解过程;在此基础上应用DEFORM 2D 有限元分析系统对,Ti-6A1-4V绝热剪切过程中的热一力变化历史进行了分析;在数值模拟结果的基础上,进行了再结晶动力学的分析与计算。
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The effect of acid, base and salt on the thermal stability of chlorinated natural rubber made from latex was analyzed by using chemical analysis, thermal aging experiments with UV spectroscopy analysis and thermal analysis.
采用热老化实验结合紫外光谱分析和热分析,分析了酸、碱及盐对胶乳法氯化天然橡胶热稳定性的影响,并讨论了酸、碱及盐对CNR热降解的影响机理。
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These indexes describe the fabric"s thermal properties during the heated process. The heat insulation ratio preferably manifests fabric"s insulation property; the difference of calefactive ratio describes dynamic conditions average calefactive case; effective thermal conductivity and compound thermal resistance are mainly considering the wholly testing characteristics and describing the compound thermal property; the response time expresses the time of step response duringdynamic testing process.3. Dynamic heat transmitting properties of fabrics and warmth retention testing methods have been developed; many different textile materials are used for actual test, and the data are analyzed, illustrated, and compared.
这些指标从不同的侧面描述了试验过程中织物试样的传热隔热性能,其中隔热率是从整体上来考虑的指标,它较好的描述了试样的隔热保温性能;升温速率差考虑的是动态变化过程中平均升温变化情况,它的大小表现了织物热性能的差异;名义导热系数和复合热阻是从试验装置的特点出发整体来考虑的热传递指标,描述了铜板、试样、铜板三者复合时的传热性能与隔热性能;而温度动态响应时间表示动态热传递过程中趋于稳态所经历的时间。
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Thermal transfer business card printing and membership card making fanwei hot press transfer business card printing and membership card making and sublimation thermal transfer business card printing and membership card production, deink thermal transfer business card printing and membership card production, flocking thermal transfer business card printing and membership card production, the transfers printed cards.
热转移制卡和会员卡制作主要有热压转移制卡和会员卡制作、升华热转移制卡和会员卡制作、脱墨热转移制卡和会员卡制作、植绒热转移制卡和会员卡制作、热转印制卡等。
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The results indicate that the different thermal expansions and elastoplastic properties and distributed randomness of various mineral particles composed of oil shale will lead to the nonuniformity of thermal field, deformation field and stress field in heating process, which makes the particles of oil shale deform incompatibly: and the release of product pyrolysis results in irreversible damages of oil shale material and structure. These are the main reasons for the thermal fracture of oil shale. When oil shale is heated through thermal conduction, temperature transfers slowly, so the spacing between heating well and production well should not be kept too long. When difference exists in oil shale reservoir's properties, heating well should be chosen in the high conductivity region. Oil shale's stratification is vital for developing permeation zone in in-situ retorting. Oil shale will generate additional expansion force as it reaches its pyrolysis temperature, and stratification will be cracked first, so the oil shale stratification should be utilized to enhance its permeability.
研究结果表明:组成油页岩各种矿物颗粒热膨胀和弹塑性性质的不同及其分布的随机性,导致油页岩加热过程中温度场、变形场和应力场的非均匀性,使得油页岩颗粒间变形不协调和油页岩热解产物释放引起油页岩材料与结构性能发生不可逆的劣化损伤,这是油页岩发生热破裂的主要原因;热传导方式加热油页岩,温度的传递比较缓慢,加热井和生产井的间距不宜过大,对油页岩储层性质存在差异时,注热井应选择较高热导率的区段;油页岩的层理对油页岩地下原位开发形成渗透带至关重要,油页岩达到热解温度会产生附加的膨胀力,首先在层理处开裂,应充分利用油页岩层理赋存条件改造其渗透性。
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In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1~0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.
本文采用三维有限元浮动网格法仿真计算程序,对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析,对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析,在此基础上提出了推荐的施工方案;根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案;玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果,对推荐的施工方案进行了温度场和温度徐变应力仿真计算,并对比分析了两种不同骨料情况下的温度场和温度应力,结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求,且灰岩细骨料优于玄武岩细骨料;计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响,夏季蓄水方案与冬季蓄水方案相比,坝体上游变态混凝土区域最大拉应力小0.1~0.3MPa,其他部位最大拉应力无明显变化,夏季蓄水对坝体上游面混凝土的抗裂有利;根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施,对大坝的设计温控措施进行了综合评价,并提出了该工程的温控措施,对温控设计和优化施工方案具有重要参考价值。
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The second part was to test the appearance, ingredient analysis, surface potential, thermal conduction properties, and magnetism of the nano composite fluid prepared from the parameters. The experiment found that unoxidized particles, Ag, Cu, Fe, and Ni appeared round. If combined with oxygen in water as oxides, the nano particles would grow toward certain directions. In copper/iron nano composite fluid, FeO appeared cubic, Cu2O appeared coniferous. In silver/iron nano composite fluid, FeO was polygonal. In dielectric potential detection, the nano composite fluid was likely to aggregate and deposit, except for silver/iron set. In other sets, the pH of silver/cobalt nano composite fluid was 7, surface potential was 21.21mV; the pH for silver/nickel nano composite fluid was 6.5, surface potential was 21.04mV; the pH for copper/iron nano composite fluid was 7, surface potential was -30mV. The fluid particles of the three sets could all maintain suspension of 2 weeks or more. For thermal conduction, the silver/nickel, nano composite fluid showed the best thermal conduction. Under temperature of 30℃ fluid weight conduction of 0.4%, the thermal conduction increase was 26%. For magnetic detection, except for silver/iron nano composite fluid, the nano particles of other three sets were paramagnetic, and all four sets were soft magnetic nano composite materials.
第二部分。将由较佳制备参数所产出的奈米复合流体,进行形貌外观、成分分析、表面电位及热传导性质实验与磁性检测;在奈米颗粒的形貌部分,经实验发现Ag、Cu、Fe、Ni等未氧化的颗粒皆呈现近似圆形,而若与水中的氧结合形成氧化物,奈米颗粒则会朝特定方向成长,在铜/铁奈米复合流体中FeO为四方体结构、Cu2O的颗粒是针叶状,在银/铁奈米复合流体中FeO则为多边形结构;而介面电位检测方面,结果显示经本制程所产出的奈米复合流体除银/铁奈米复合流体这一组较容易聚集沉淀外,其他三组中银/钴奈米复合流体的pH值为7,表面电位为21.21mV,银/镍奈米复合流体的pH值6.5表面电位为21.04mV而铜/铁奈米复合流体的pH值为7时表面电位约在-30mV,且此三组流体颗粒皆能维持悬浮性2周以上,悬浮性较佳;热传导实验部分,四组奈米复合流体中以银/镍奈米复合流体在增进热传上效果最佳,在温度30℃及流体重量浓度0.4﹪条件下热传导系数增进达26﹪;磁检测方面,除了银/铁奈米复合流体外,其他三组奈米颗粒皆属顺磁性,且这四组奈米复合材料都是属软磁性。
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A transient thermal coupling model of certain internal combustion engine exhaust valve train was built, transient thermal-field distribution of the valve was simulated, and the effect of the thermal conductivity to the thermal-field was discussed.
通过建立某发动机排气门组瞬态热分析藕合模型,对排气门进行瞬态温度场有限元模拟,并探讨导热系数对气门温度场的影响。
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Based on the theory of thermal emission polarization and the method of thermal emission polarization detection, the relation between the surface roughness of aluminum and steel plates and their degree of linear polarization of the thermal emission was studied by using a kind of thermal imaging polarimeter.
中国科学院安徽光学精密机械研究所遥感研究室,合肥 230031根据热红外偏振的原理和探测方法,利用一种热红外偏振探测系统分别研究了铝质和钢质金属板热红外偏振度和其表面粗糙度之间的关系。
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First acts according to the asphalt pavement the light thermal environment, has established the asphalt road surface thermal equilibrium equation, to affect the asphalt pavement surface thermal equilibrium temperature each factor level of significance to carry on the analysis, discovered in order to reduce the asphalt pavement surface thermal equilibrium temperature the feasible technical route.
首先根据沥青路面的光热环境,建立了沥青路表面的热平衡方程,对影响沥青路面表面热平衡温度的各个因素的显著性水平进行了分析,以求找出降低沥青路面表面热平衡温度的可行技术路线。
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。