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A detailed three-dimensional solid model of the piston is established by means of Ansys 11.0 Workbench Environment, which is issued in March 2007. Using the third thermal boundary conditions, analysis of the three-dimensional piston, including temperature, displacement and thermal stress field are performed by means of thermal-structural coupling. Structural optimization is also accomplished and a new piston has been designed, which performance is getting improved.

本文在2007年3月发布的Ansys 11.0协同仿真环境中建立了详细的活塞三维实体模型，运用第三类热边界条件，结合热耦合分析方法完成了活塞的三维温度场，位移场及热应力场的仿真，在此基础上对活塞的结构优化进行了探索，并设计出一款性能得以改善的活塞，实现了真正意义上的仿真驱动产品设计。

In order to meet the demand of thermal design of modern machine tools, thermal model and thermal characteristics of high-speed spindle system in numerical control precision lathe were studied in detail using finite element method.

进一步计算主轴系统的热变形，并通过对主轴箱体散热筋板的合理布局和优化设计，有效降低了主轴头部的径向跳动和端跳误差，使其小于 2μm，均能满足设计要求。

In order to fabricate high–silicon aluminum alloy electronic packaging materials, the oxidating processes in high temperature oxygenation was applied to the Al-30Si and Al-40Si high-silicon aluminum alloys which were prepared through extrusion process. Scanning electron microscope, optical microscopy, thermal physical tester and universal material testing machine were used to study the microstructure, density, hermeticity, coefficient of thermal expansion, thermal conductivity and compressive strength.

摘 要：针对应用广泛的高硅铝合金电子封装材料，采用高温充氧氧化工艺，对已挤压成形的Al-30Si及Al-40Si高硅铝合金材料进行后续处理，通过扫描电镜、金相显微镜、热物性测试仪及电子万能拉伸试验机等，对材料显微组织、密度、气密性、热膨胀系数、热导率及抗压强度进行了分析比较。

At different heating rates, thermal decomposition process and thermal decomposition kinetics of basic zinc carbonate are researched by thermal analysis method in nitrogen atmosphere.

在不同升温速率条件下，用热分析法研究了碱式碳酸锌[2ZnCO33Zn2]在氮气氛中的热分解过程与热分解动力学。

Space Camera Optical Window Thermal-Optical,Thermal Environment and Thermal Control Research.

赵立新。空间光学窗口和外遮光罩的热光学分析及其在工程中的应用。

The results show that the composite is dense and silicon particles are distributed uniformly. Transmission electron microscope observations show that stacking faults with high density, twins and dislocations are found in silicon particles. The Si-Al interfaces are well-bonded and no interface reactants are found. The dislocations and eutectic silicon precipitates are observed in LD11 matrix. Sip/LD11 composite has low density of 2.4 g/cm3, low coefficient of thermal expansion of 8.1×10-6/K, high thermal conductivity of 161.3 W/, and the annealing treatment can reduce the CTE and improve the thermal conductivity.

研究结果表明：复合材料组织致密，颗粒分布均匀；透射电镜观察发现，在Si颗粒内部存在高密度的层错，同时还存在孪晶和位错； Si-Al界面结合状况良好，无界面反应物； LD11铝合金中存在位错和析出的共晶Si；复合材料具有低密度(2.4 g/cm3)，低热膨胀系数(8.1×10-6/K)，高热导率161.3 W/(m·K的特性，可以通过退火处理进一步降低其热膨胀系数，提高热导率。

Thermal insulation and sound insulation pipe materials produced with Fuerda glass wool by formation through curing by applying pres-sure and heating after applying thermosetting cement are widely used for thermal insulation and heat preservation of thermal piping, cold water and hot water piping and steam piping in electric power, petroleum, chemical industries.

富尔达公司生产的玻璃棉施加热固性粘结剂，通过加压、加温固化成型的板材，适用于和种不同规格空调风管及其他风管的保温与隔音，表面可粘贴铝箔等贴面，具有保温效果好、容重轻、阻燃、抗振吸音等优异性能。

Thermal Power Engineering;Steam Turbine;Thermal Stress;On Line Monitor;Thermal Power Plant

论文导师徐鸿，论文学位硕士，论文专业热能工程

The main works are listed as follows:1 Thermal Computi ng model of steam pipe network were built with good match to actual operating dataThe thermal calculation model of steam pipe network was established according to the steam pipe network heat transfer characteristics and the thermal equilibrium principle,. It includes steam temperature drop expression, the expression of per unit length heat loss when steam pipe laying in different ways and total heat transfer coefficient expression.

该模型由管内蒸汽温降方程、不同敷设方式蒸汽管道的单位长度散热损失方程、总传热系数方程等组成，利用散热损失计算公式对钢套钢蒸汽保温管道不同敷设方式、不同管径的散热损失等总传热系数的影响因素进行了分析，计算结果表明三方程联合求解提高了新建蒸汽管网热力计算的准确度，可用于新建蒸汽管网的热力计算。

The thermal boundary condition of the cast iron cooling stave with surface alloyed steel pipe was used for numerical simulation of temperature field and commercial software ANSYS and the method of coupling heat-structure were used to calculate thermal deformation of steel pipe at high temperature,and analyze the influence of air gap and thermal deformation on the life of cooling stave.The optimal size of air gap and hot load to guarantee long life of cast iron cooling stave were obtained.

根据合金化管铸铁冷却壁热态试验数据确定了合金化管铸铁冷却壁温度场数值模拟的边界条件，利用ANSYS软件、采用热-结构耦合的方法计算了高温状态下合金化管铸铁冷却壁内钢质冷却水管的变形，分析了气隙层和水管热变形对合金化管铸铁冷却壁寿命的影响，得出保证合金化管铸铁冷却壁长寿的最佳气隙层厚度和相应的最佳使用热负荷。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。