查询词典 thermal conductivity

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 white carbon black formed good thermal conductivity network with the molecular chain of the rubber, and the dispersion of the white carbon black in the natural rubber matrix was improved when the surface of the white carbon black was treated with Si-69, and the thermal diffusivity of the rubber was improved greatly.

白炭黑在Si-69的表面改性作用下，能与胶料分子链形成较好的导热网络结构，使其在天然橡胶基质中的分散程度得到改善，从而使胶料的热扩散系数得以提高。

The coefficient of thermal expansion and thermal conductivity of the composites decreased with the in...

随着SiC颗粒含量的增加，复合材料的热膨胀系数和导热率降低；SiC颗粒越小，热膨胀系数越低，而导热率越好；适当增加杂质含量有利于获得较高的导热率。

In the School, there is a high-level experiment research center furnished with the atomic absorption spectrophotometer , comprehensive thermal analyzer, in-situ high temperature and high resolution SEM, in-situ high temperature XRD, RAMAN, ICP, FTIR, AFM, CHN, laser particle analyzer, GPC, dynamic mechanical analyzer, laser flash thermal conductivity determinator , high temperature graphite furnace , PECVD, magnetron sputtering furnace, etc.

学院建设具有高水平的实验研究中心，拥有ICP、DSC、高温原位HRSEM、、高温原位XRD、RAMAN、激光粒度仪、GPC、CHN、DMA、孔径与比表面测定仪、激光闪光导热率测定仪、高温石墨炉、真空热压炉、PECVD、磁控溅射仪等仪器设备。

A 3ω method was developed for the simultaneous determination of thermal conductivity and thermal diffusivity of nanofluids.

提出了应用基于谐波探测技术的3ω法进行液体导热性能测量的方法。

Magnesium silicide (Mg2Si) is one kind of narrow-band-gap n-type semiconductor, and is a promising environmentally friendly thermoelectric material because of its high electrical conductivity and low thermal conductivity, and also because it is non-toxic and non-polluting.

硅化镁(Mg2Si)是一种窄带隙n-型半导体，具有高的电导率和低的热导率且无毒无污染、耐腐蚀，是很有潜力的环境友好型中温域热电材料。

With the increasing of content of selenium, the electrical conductivity and thermal conductivity increase but the Seebeck coefficient decreases.

随着Se含量的增加，样品的电导率和热导率逐渐增加，而Seebeck系数逐渐降低。

The absolute value of the Seebeck coefficient increases with Sr content, while thermal conductivity and electrical conductivity decreases.

Seebeck系数的绝对值升高，热导率降低，电导率下降。

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

In electronic engineering, we usually have to bond a micro-strip board to a metalcarrier in order to provide proper stiffness, thermal conductivity and electrical conductivity, thus to make general handling,solder stencilling, pick and place of components be easier, and prevent the warping or distortion of the board during soldering.

林伟成，微带板与金属载体间的大面积焊接及胶接方法工程中常常需要把微带板和金属载体焊接或胶接起来，以获得合适的刚性、电导率和热导率，从而使丝网印刷、元器件贴装等工艺过程变得更加容易。并防止焊接过程中微带板的翘曲和变形。

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％。