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Based on the analytical theory of aeolotropy,thermal distortion and temperature field distributions of Nd∶YVO4 crystal with rectangular section were investigated when the third thermal boundary condition was considerated.

以各向异性半解析热分析理论为基础，研究矩形横截面Nd∶YVO4激光晶体在有第三类热边界条件工作时，激光晶体温度场分布和晶体抽运面热形变分布。

Surface temperature is a key content of thermal environment, because it directly affected thermal comfort and air temperature.

表面温度是热环境的核心内容之一，它直接影响着热环境的舒适度，也是气温变化的主要动因。

As a thermal compensation device, bellows expansion joints can compensate for the pipeline's thermal growth and the equipment's movement, and absorb the pipeline's vibration, which have characteristics such as simple assembly, good airtightness, a small area coverage, durability, reliable quality, large compensation quantity, and so on.

波形膨胀节作为热补偿元件，能够补偿管道的热变形、机械位移和吸收管线振动，具有装配简单、气密性好、占地面积小、工作可靠、补偿量大等优点，在航空航天、核电、石油化工、水利、城建、电力、冶金等领域得到了广泛应用。

In this paper, thermal explosion theory is applied to study the thermal safety of ammonium nitrate in aqueous solution, and design a set of detonation temperature test.

摘要硝酸铵在一般情况下是稳定和安全的，但是随着温度的升高以及杂质参与的作用，硝酸铵就会分解放出热量，从而导致燃烧或爆炸。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Adding material in the andalusite to form a phase-change thermal stress of the proliferation of many small gaps, making receive Refractories with the release of the stress, resulting in improved thermal shock resistance.

在材料中添加红柱石能相变形成热应力扩散的无数细微空隙，使得耐火材料内的应力得到释放，从而提高了抗热震性。

The knowledge of the decimal reduction times and the thermal resistance constants provides a direct approach for establishing the thermal death time needed to ensure product safety andor an acceptable spoilage level, based on economics.

D值和z值的知识是提供确定热致死时间的一个直接的方法，热致死时间可以确保产品的安全或和从经济角度考虑的可接受的腐败程度。

The thermal residual stress is a type of short-rang internal stress between matrix and whisker in composite. It was verified that the thermal residual stress could not be released and could not cause the macro-strain, although the diffraction angle of matrix was shifted in composite.

复合材料中热残余应力是基体与晶须之间的短程内应力，试验证实热残余应力虽可引起基体衍射峰位移动，但不会造成复合材料宏观应变而自然释放。

The linear theory of antisymmetric ducted gravity waves supported by mesospheric thermal duct is presented, propagation and evolution of gravity wave packets in thermal duct is also simulated by using a nonlinear two-dimensional model. Numerical results show that lower atmospheric wave disturbance can penetrate into the duct area and be trapped.

给出了重力波在中层大气温度波导中的反对称形式导制传播的线性理论模型，并采用二维非线性的数值模型对重力波波包在中层大气温度波导中的传播和演变过程进行了模拟研究。

The results indicate that the thermal conductivity of Si3N4 thin film increases with the temperature;under high frequency stage the frequency has apparent effect on the thermal con...

测试结果表明：Si3N4薄膜的热导率随温度的升高而增大；高频段下，热导率受频率影响大，误差大；在低频段下薄膜热导率与频率变化基本无关；基于电子与声子的局部热平衡运输方程假设，S i3N4薄膜的热导率具有极度非平衡性；通过比较电阻、热导率与温度的关系可以看出加热器的尺寸大小会影响薄膜的热导率，最佳加热器的宽度选用20μm左右。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。