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The characteristic of machined surface of high speed machining aluminum alloy 7050-T7451 is researched by micrographic experiments and analysis. The formation mechanics of machined metamorphism layer has been analyzed and studied. The dislocation-energy model in machined metamorphism layer was established and applied to explain the micrographic mechanics work-hardening using the thermo-mechanical coupling deformation theory and dislocation theory. The experimental results show that the interaction of high dislocation density effect on hardening is more remarkable than that of thermal stress in high speed machining.

利用显微观察方法对铝合金7050-T7451高速铣削加工的工件表面断面和不同深度的表层的微观形貌特征进行系统的研究，确定了高速切削加工铝合金7050-T7451的表面变质层深度为30～35μm；应用位错能量研究了高速铣削加工过程的热力耦合对变质层的影响机理，并通过微观形貌观察证明：与普通切削相比，高速铣削表层塑性变形的能量和位错密度更高；建立了位错密度的加工硬化的动力学模型，研究了加工硬化的热-力耦合形成机理；对微观裂纹的形成机理进行了理论分析，证明位错密度高的高速切削过程中较低速加工更容易产生明显的微裂纹，从分子级乃至原子级的水平进一步揭示高速切削加工表面变质层的形成特征。

Compared with those bipolar-transporting materials containing carbazole and aryl oxadiazole groups connected with conjugated groups, these bipolar-trans- porting materials here presented high HOMO and LUMO energy levels and thermal stability.

与共轭基团桥联咔唑和芳基噁二唑的双极传输材料相比， HOMO/LUMO能级相应地提高，热稳定性能增强。

The existence of polymeric chain provides additional channels for the elimination of the absorbed energy along the polymer backbone, and with the correspondence increases the photostability and thermal stability of the dyes.

聚合物链的存在为共聚物体系的非辐射能提供了一个额外的通道，有利于体系的热稳定性和光稳定性提高，这为设计合成新型固体激光材料提供了理论依据。

The results show that considerable response in land surface energy budget could be expected when the soil thermal forcing reaches a certain spatial-tem poral scale.

结果表明：当土壤热异常达到一定强度并且能较快上传时将对地表能量平衡过程产生明显影响。

In the Stirling piston engine, the regenerator is a temporary heat storage aimed at increasing "thermal efficiency" with free-energy preheating and precooling.

在活塞的斯特林发动机，再生器是一个临时储热预冷旨在提高能源预热和&热效率&与自由。

Based on function of visual weather tool of Ecotect and thermal comfortable zone of psychrometric chart,this paper analyzes schemes of saving energy design.

借助辅助生态软件Ecotect的可视化气象数据分析功能，利用焓湿图上的热舒适区域百分比对节能设计方案进行分析。

A set of quadruply coupled equations (fluid flow, convection-diffusion, energy conservation and mechanical equilibrium) with a number of cross-couplings and coupled constitutive relations is formulated to quantify the multi-physics of oil displacement by CO2 injection, implemented into and solved by using FEMLAB. FEMLAB is the first engineering tool that performs equation-based multi-physics modeling in an interactive environment. With FEMLAB, the coupled multi-physics model can be solved simultaneously. The applicability of this model has been demonstrated through an example of simulations for a two-dimensional reservoir of size 1000 m×1000 m with one injection and one production wells. Model results illustrate the significant importance of the cross-couplings between individual (thermal, hydrological, chemical and mechanical) physics.

首先，建立一套流、固、热、多相流等多场全耦合控制方程组及其相应的耦合本构关系；然后，采用FEMLAB为工具来模拟三次采油阶段CO2驱油过程中的流、固、热、物质守恒等多场之间的全耦合作用，是第一个人机交互式的基于偏微分方程组的多物理场耦合分析的工程工具，利用FEMLAB，该4个耦合方程组成的方程组可以一次同时被求解出来：最后，应用该模型来求解一个二维油田的驱油情况，数值计算结果表明，原位应力、注入温度、注入压力等因素对CO2的地下贮存效率、驱油速度等有重要影响。

In the all-solar thermal power generation, the thermochemical energy storage is a key step.

热化学储能问题是纯太阳能热发电过程中最关键的一个环节。

By applying thermochemical energy store,solar thermal power can be produced continuously day and night.

应用热化学能量储存可使太阳能热能动力得到一天 2 4h连续供给。

thermal conductivity ; thermometric conductivity ; coefficient of energy storage ; heat resistance ; motor temperature rise ; motor insulation structure

本文的目的是将建筑材料的热传导基础理论用于电机、电器的热场设计之中，加快我国

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。