本文讨论了铝合金预形热变处理的强韧化机制。
In this paper the toughening mechanism of aluminium alloys after PTMT is discussed.
核黄素存在下DNA热变温度的变化表明,它们之间的作用方式不是经典的嵌插方式;
The thermal denaturation temperature of DNA in the presence of the RF indicated the mode of action between RF and DNA was not a classical intercalation mode.
热变次生组份具有不同于泥炭化时期所成的显微组份结构特征,往往具有较为强烈的光学各向异性。
The structure of the thermal secondary maceral was different from that forming in the period of peatification.
其中包括:当土壤正在变干之时,凭颜色发出警告的花盆;用水笔代替粉笔写字,用热脉冲可以擦除字迹的黑板;甚至包括在雨中变化颜色的汽车。
Among them: flowerpots whose color warns when the soil is drying out, blackboards using water instead of chalk that could be erased by a pulse of heat, and even cars that change color in the rain.
这块万里无云的天空下,地表温度上升、失去水分,从而造成地面上的物质越变越热、愈加干燥,但降雨的机会却丝毫未增加。
Under cloudless skies the surface heats and gives up its moisture, making things at ground level hotter and drier while not increasing the chances of rain.
“随着世界越变越热,这些生物将无处可去,”澳大利亚昆士兰州詹姆斯·库克大学的StephenWilliams说。
"As the world gets hotter, these creatures have nowhere to go," says Stephen Williams from James Cook University in Queensland, Australia.
锅中放油加热至7成热,放入鸡腿烹炸直至肉身变金黄色(大概要8分钟左右的时间),捞出盛盘。
Add chicken and cook until golden brown on all sides, about 8 minutes. Remove to a platter.
在热交变应力的作用下,热疲劳是铸铁工件的主要失效形式之一。
Under act of the alternating thermal stress, thermal fatigue is one of theprimary invalidity forms of cast iron workpiece.
锻造钢锭多采用热锭加热,其特点是在恒温炉中一段加热和在变温炉中两段或三段加热方式。
Hot ingots are often heated in forging furnaces, the feature of which is one-stage type in a constant temperature furnace and two-or three stage type in a temperature-variable furnace.
通过热力学第二定律,从理论上分析熵变与热温商之间的关系,再进一步由实践验证。
The paper discusses the relation of entropy change and quotient of heat-temperature based on the second law of thermodynamics.
结果是均匀地分布热,当对完美时的变褐的和变成焦糖的食物的生铁炊具。
The result is cast iron cookware that distributes heat evenly, while Browning and caramelizing food to perfection.
一个主要原因是车轮在钢轨上由于制动滑动产生的脆性马氏体所导致的踏面热损伤和蠕变。
One of important reasons is that the generation of brittle martensite due to brake sliding of wheels on rails leads to tread damage and its creep.
热释电探测器为交变信号检测器件,根据这一原理,研制了一种新的激光训练系统,完全解决直射光的问题。
Pyroelectric detectors depend upon alternating signal, based on which a new kind of laser training system was developed, and the problem of direct light was solved.
研究进一步表明,材料变形的难易程度又与变温循环过程,热疲劳试样拉伸应力的增加和材料屈服强度的降低有关。
Moreover, it is revealed that the deformation resistance in the thermal cycle process is related to the increase of its tensile stress and the decrease of yield strength.
用热退磁和交变场退磁方法对59个采点的619块样品做了磁清洗处理。
We have carried out magnetic cleaning for 619 specimens from 59 sites by A. F and thermal demagnetization.
结合长期热环境下肿瘤生长的实验数据,对该过程中肿瘤系统内可能的熵变进行了半定量和定性分析。
The results show that the long-term hyperthermia environment can increase the positive entropy of the system and finally inhabit the growth of tumor.
该系统采用了大温差变流量冷水机组、大温差定流量带部分热回收土壤源热泵机组与锅炉的组合;
The chillers adopt large temperature difference and variable flow, the heat pumps adopt large temperature difference and fixed flow and part heat recovery.
本实验选取航空发动机涡轮叶片中段内部冷却通道为研究对象,对不同肋间距的横肋变截面U型通道的换热特性进行了研究。
The experiment has studied the heat transfer characteristic inside U shaped variable cross-section channels with different rib pitches, The channel is the middle part of a gas turbine blade.
针对食品冷冻冷藏过程中货物热负荷不断发生变化的情况,设计了模拟变负荷食品试验箱。
The simulative variable load food test chamber is designed according to the constant change of heat load in the process of food refrigeration.
根据物理上直观的拉格朗日法,分析了交变流动发动机中回热器内代表性气体微团的热力过程和循环。
The thermodynamic processes and cycles of some characteristic gas parcels in the regenerator in a cyclic flow engine are analyzed thoroughly in Lagrangian's view.
在耦合热弹性问题变分原理的基础上,导出非定常温度场热弹性平面问题的有限元法基本方程。
The fundamental equations in finite element method for unsteady temperature field elastic plane problem are derived on the bases of variational principle of coupled thermoelastic problems.
在热分散过程中,由于温度控制具有非线性、慢时变、大滞后的特点,并存在不可测干扰。
In the heat dispersion process, temperature control has the characteristic of nonlinear, slow time-varying, lagging behind the major and simultaneously unpredictable disturbance.
这一课题的研究意义就在于,在理论分析及仿真试验的基础上找出最为适合热工控制对象参数时变这一特性的具有较强鲁棒性的控制器设计方案。
The research meaning of this subject is to find out the most suitable method of design of controller witch has good robust stability and witch is suitable for thermal control target .
交变流动系统中的传统换热器由于受到长度、换热面积和其它因素的限制,往往难以进一步强化换热,在大功率系统中应用受到限制。
It is difficult to enhance the capacity of the traditional heat exchanger in high power oscillating flow systems due to the restriction from length, area et al.
随着注入压力、注入流量以及注入时长的增加单位时间的总热损逐渐减小,但是降低幅度变缓。
The total heat loss per unit time decreases gradually as the injection pressure, injection flow rate and injection time increase, but the decrease extent reduces gradually.
模型考虑了注汽管线上各种阀门、弯头、补偿器、异径管的影响,考虑了变注入工况和注汽管偏心结构对热损失的影响。
The following factors were considered in heat loss calculating model, namely various valves, elbows, compensator, tube diameter, various injection conditions and injecting pipe's eccentric structure.
论述了辐照后包壳管在热室中的拉伸、爆破、蠕变等试验方法,比较辐照前后包壳力学性能的变化。
Tensile test, tube burst test and creep test of irradiated cladding in hot cell were discussed. The changes of mechanical properties of cladding before and after irradiation were compared.
本文以沈阳-大连高速公路为工程背景,应用热弹性力学理论,计算了路表面发生不同变温时,路面体的响应。
The paper taking Shen-Da Expressway as background, calculate response of the pavement system when pavement is in variant temperature change, adopting the theory of heat elastic mechanics.
本文以沈阳-大连高速公路为工程背景,应用热弹性力学理论,计算了路表面发生不同变温时,路面体的响应。
The paper taking Shen-Da Expressway as background, calculate response of the pavement system when pavement is in variant temperature change, adopting the theory of heat elastic mechanics.
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