热扩散

Specimens of the SBCB with different graphitizing degree were obtained in laboratory. Effects of graphitizing degree on the properties of the SBCB, including structure, thermal conductivity, thermal expansivity, resistance to thermal shock, resistance to erosion of molten iron and slag, were studied respectively.

在实验室制备了不同石墨化度的自焙碳块，并研究了石墨化度对自焙碳块的结构性质、高温冶金性能(包括恒压比热容、热扩散率、导热性、热膨胀性、抗热震性)、抗铁水和熔渣侵蚀性能及铁水渗透的影响。

The results showed thermal diffusivity and thermal conductivity increased with the increase of the content of MgO, the highest thermal conductivity was up to 3.4W/mK, and this composite was still injection moldable and possessed acceptable mechanical properties.

实验发现：热扩散系数和热导率随氧化镁的填充量的增加而增加；最高热导率达到3·4W/，此样品仍然可注射成型，且具有良好的机械性能。

With increase of the temperature,the specific heat capacity of composites was increased,the thermal diffusivity and the the...

随着增强体SiC体积分数的增大，复合材料的热容线性下降，热扩散系数和导热系数均非线性减小。

Thermal diffusilivity, thermal conductivity,and specific heat capacity of tire tread rubber filled with different carbon black or amount were studied.

研究了炭黑品种和用量对轮胎胎面胶热扩散系数、导热系数及比热容3种热物性参数的影响规律。

This characteristic of the stainless steel is determined by the variance of therm...

随辐照时闻的增加，温度的升高，其温度涨落的幅度基本保持不变，这一持性是由不锈钢的热学参数如热传导率、热扩散率随温度变化的规律所决定的。

The thermal conductivities and thermal diffusivities of the material must be known.

必须知道各种材料的热导率和热扩散率。

The main reason causing the defects and low angle boundaries in SC casting is the perturbations of heat flow and the slight misorientation at the S/L interface. An uniform and unidirectional heat flow is required to produce a single crystal casting free of low angle boundaries or splaying

单晶组织中由于晶体取向与热扩散场综合作用因素造成的亚单元生长形态的改变是造成单晶缺陷的主要原因，控制均匀、严格单向性的热场，并利用单晶生长的各向异性特性，可以避免发散型枝晶组织和小角度晶界的出现。

The thermal diffusivity of diamond films and diamond-based masks were measured by means of the photothermal deflection method with an error of 5%.

我们采用光热偏转法实现了金刚石薄膜和金刚石基底掩模的热扩散率和热导率的测试，测量误差小于5%。

Therefore, for improving the accuracy of exceed slender axle on turning,must need to do with the lathe fixture and cutting tool for further improvement. In order to reached the requirements of precision machining,in machining process must use follower rest、flexible active thimble、space block and bracket etc fixture and assistive device.

超细长轴在车削加工中承受自身重力、切削力、高速旋转产生的离心力的作用，极容易出现振动与弯曲变形现象，增大轴的几何形状误差，而超细长轴的轴向尺寸较大，直径较小，热扩散性及刚性差，受切削热作用会在轴向发生线性膨胀，若在轴向的伸长量无法得到消除，轴将受迫弯曲，从而影响轴的精度。

The influence of temperature and heat flux direction on the heat conduction characteristics of four common woods, fir, red pine, white pine and larch, were investigated.

以4种常用木材为实验对象，研究了不同温度和热流方向对木材的导热系数、比热和热扩散率的影响，并分析了热物理性质变化的原因。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。