查询词典 thermal

In the investigation of Cu-Zn-Al SMA, the influence of quenching speed, shape memory thermal treatment on SME, microstructure and morphologies was discussed. The changes in morphology and interfaces were in situ metallographic observed during thermal cyclings in order to control the degradation of two way shape memory effect . The stabilization of stress induced martensite variants method and the accordingly changes in microstructure were studied in detail. The mechanism was also compared between SSIM and TWME training method. From the above in situ observation results, the interface structure and especially the twin related A: B type variant pair were examined by HREM to clarify the role of movability of interfaces and the changes in variants orientation in inducing the degradation of the TWME. During developing the Ni-Ti-Hf SMA melt spinning ribbon, it was found the morphology and structure embodied the SME and was directly effected by chemical composition and technique factors, such as the different content of Hf, the speed of copper roller rotation and etc. Therefore, the morphology and structure were extensively examined.

在对Cu-Zn-Al形状记忆合金研究中，研究了提高记忆效应的热处理淬火速度、记忆热处理方式对Cu-Zn-Al形状记忆合金组织结构的影响；为了弄清双程记忆效应衰减的原因，原位动态观察了热循环过程中，合金组织形貌及界面的变化；因形状记忆合金必须经记忆训练才能具有双程记忆效应，系统地研究了应力诱发马氏体稳定化训练方法和这种方法引起的双程记忆合金组织结构的变化，比较了它与双程记忆效应训练方法诱发TWME机制的异同；因在原位动态观察中发现界面可动性及两侧变体取向的变化，伴随着记忆效应的衰减，用HREM详细研究了变体的界面结构，特别是A：B型变体界面结构及变体内部结构。

Mechanics mechanism of thermal fatigue and the affection of assembly temperature on thermal fatigue life were studied by using finite element method in consideration of the multilinear kinematic hardening of a material.

考虑材料的多线性塑性随动强化性质，采用有限元方法研究了热疲劳过程的力学机理和安装温度对热疲劳寿命的影响。

A simple sample with crack is analyzed on thermal fatigue applying finite element method and multilinear kinematic hardening rules of material, based on which the processes and rules of the thermal fatigue crack opening are studied.

用有限元方法并考虑材料的多线性随动强化性质对带有裂纹的简单试件模型进行热疲劳分析，研究热疲劳裂纹张开的过程和规律。

Establish the steady-state and transient model using the three hydrodynamics equations (Continuity equation, Momentum equation and Energy equation). By comparing different state equation, it selects the BWRS state equation which is considered the most accurate state equation in current natural gas measurement. It calculates compression factor, density and other Thermal parameters based on BWRS state equation. In Numerical solution of the steady-state and transient model, compression factor, friction coefficient and all the other Thermal parameters are recalculated in each small time step to reduce the numerical calculation error.

在稳态模型的建立上，利用流体力学三大方程(连续性方程、运动方程和能量方程)，通过比较不同的状态方程选用了目前被认为最精确的用于天然气计量的BWRS状态方程，并以此方程为基础进行压缩因子、密度等热物性参数的计算；在稳态模型的求解上，选用容易计算，精度较高的标准型龙格—库塔(Runge-Kutta)法进行数值求解，并且在迭代过程的每一小步都重新计算燃气的压缩因子，摩阻系数等所有的计算参数，以减少数值计算的误差。

Metallurgy School, UST Beijing, Beijing 100083, China）ABSTRACT The negative thermal expansion in some complex oxides has beenattributed to transverse thermal motion of A-O-M linkage composed of two-coordinate oxygenbridge bond, and the librationsand tilts of essentially rigid polyhedral blocks in openframework structure. The isotopic NTE materials have been finding moresubstantialapplications in composites and other relative technique fields.

氧化物材料负热膨胀机理邢献然摘要氧化物的负热膨胀性是由于在其开放式的骨架结构中，有二配位的桥氧键产生横向热运动，以及引起的多面体热摆动和耦合作用使非键合M-M1键距变短，导致单胞体积缩小；各向同性NTE氧化物在复合材料及其相关技术领域具有更广泛的应用价值。

The aim of this work is to obtain styrene monomer and high octane number gasoline fraction from polystyrene by thermal and thermal-catalytic treatment respectively.

本文的目的是用热解和热解-催化两种方法由聚苯乙烯制取苯乙烯单体和汽油组份。

According to thermal conduction theories of anisotropic materials that are irradiated with continuously modulated laser, a photothermal measuring method about the thermal conductivity tensor and the orientation of the principal axis of the conductivity of arbitrarily opaquely anisotropic materials is given based on the theories of So(3) group rotation.

以在连续调制光辐照下的各向异性介质的热传导理论为基础，通过So(3)群转动理论，导出不透明各向异性介质的热导张量和热导主轴方向的光热测量方法。

Aluminum nitride substrate has been recognized as one of ihe most promising electronic substrate as heating panel and packaging materials for its high thermal conductivity, fine electrical insulation, and close coefficient of thermal expansion to silicon semiconductor.

氮化铝材料具有较高的热导率和良好的介电性能，机械强度高，热膨胀系数与半导体硅材料相近，非常适于制造大功率或快速半导体器件的散热基片和封装材料。

Taking a room with floor panel heating system in Beijing as an object, analyses the effects of the panel surface temperature, mean radiant temperature and indoor air temperature on human thermal comfort by establishing thermal balance equations of human body and heating room respectively.

以北京地区采用地板辐射供暖系统的建筑房间为研究对象，通过建立人体热平衡与房间热平衡方程，分析了地板表面温度、房间平均辐射温度、房间空气温度对人体热舒适性的影响。

Parasitical thermal radiation loss is the main factor which greatly influences the thermal-to-electric converting efficiency of AMTEC.

引 言寄生热辐射损失是影响碱金属热电直接发电装置热电转换效率的主要因素之一。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。