热导

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 effect of thermal conductance of the component and the contact layer on output power and efficiency was discussed.

建立了热电发电器件工作的一维模型，应用热力学理论分析了发电器件的输出功率和效率，并重点讨论了元器件热导及热端板、冷端板与元器件间的接触层热导对输出功率和效率的影响。

The figure of merit, ZT is calculated in terms of electrical resisitivity, Seebeck coefficient and thermal conductivity.

对高温高压下部分样品热导率的测试表明：我们所合成的样品都具有较低的热导率，已经达到了高性能热电材料对热导率的要求。

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。

In this study, the highest thermal conductivity of W/m K was attained when the unpurified MWNTs loadings reaches 4.0 wt %, which is over 10 times higher than the thermal conductivity of PMMA.

本研究对奈米复合材料的热传导系数进行研究，结果显示添加4.0 wt%未纯化的多壁奈米碳管对於复合材料热导性质的提升量最高，可达到基材热导系数的十倍以上。

In this paper,the response factors of thermal conductivity detector of monochloromethane and dimethyl ether are estimated and calculated by using group cross section area method,molecular diameter method and homologue linear rule method.

热导校正因子的估算以及在工业氯甲烷生产中的应用李洪宽（山东省化工研究院色谱中心济南250014）关键词气相色谱法，一氯甲烷，热导检测器，校正因子1前言热导检测器定量校正因子的测定和计算是气相色谱热导定量的关键。

In this paper, finite element software ANSYS is used to simulate the thermal conductivity and pressureless infiltration technique is used to produce aluminum infiltrated silicon carbide composite with high volume fraction of SiC. The influence of interfacial thickness and temperature on thermal conductivity and CTE have been investigated and analysed.

本文采用有限元软件ANSYS对铝渗碳化硅复合材料的有效热导率进行了数值模拟，用无压浸渗法制备了高体积分数的铝渗碳化硅复合材料，研究了界面层厚度和温度等对铝渗碳化硅复合材料的热导率和热膨胀系数的影响，并进行了分析。

Then we studied the photothermal deflection on membrane with high transparence for the first time. When the product of the thermal conductivity and thickness of film is correspond to that of substrate, the thermal conductivity and diffusivity of film could be measured by photo-thermal deflection method.

然后，第一次探讨了透明性好的带衬底的薄膜材料的光热偏转理论，讨论了只有在薄膜热导率与厚度的乘积与衬底的热导率与厚度的积相比拟时，可以使用光热偏转方法测量薄膜的热导率和热扩散率。

However, it will be reduced by the effect of phonons scattering, which is caused by point defects and crystal boundaries.

这一结果可解释为：常温下半导体材料的热导率主要是由晶格热导率决定，晶格热导率的大小由导热声子的输运过程决定的。

Compared with the bulk Ba8Ga12Zn2Ge32 material prepared by melting method combined with SPS (MM+SPS sample), the bulk Ba8Ga12Zn2Ge32 material obtained by melting method combined with MS and SPS (MM+MS+SPS sample) has higher carrier concentration and lower carrier mobility at room temperature.

与熔融+SPS工艺制备的试样相比，熔融+MS+SPS制备的Ba8Ga12Zn2Ge32笼合物室温载流子浓度增加而迁移率降低，在测试温度范围内，试样的电导率略有下降，Seebeck系数增加，热导率和晶格热导率显著降低，900K时其晶格热导率从1.06W/mK降低至0.42 W/mK。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。