heat diffusion

By thermal conducting method and the finite difference method, we also analyzed the heat diffusion in different material structures.

同时我们利用热传导学中的传导方程和有限差分法对热电极作用下不同材料结构中的热场分布情况作出了分析。

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When various manipulations disturb the thermal boundary layer inside or the condensate film and gas-vapor diffusion layer outside, the heat transfer effect will be better or be worse off.

各种操作条件只有影响到管程的温度边界层或壳程的冷凝液膜层和气-汽扩散层，才能强化或恶化传热过程。

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Thermo-chemical Treatment with Pure Heat Diffusion Penetration will be Replaced by Other Types of Energy Aided Diffusion Penetration in the 21~ ( st) Century

21世纪化学热处理将由其它能助扩渗代替纯热扩渗

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Uses: diffusion pump oil for heating, high temperature heat presses.

功用: 用于油扩散泵炮炼 、 高温塑机炮炼.

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With actual measurement, some thermodynamic parameters such as bulk specific heat volume C ρ, coefficient of heat conductivity λ, and coefficient of heat diffusion H were obtained.

对计算中用到的材料参数如体积比热容Cρ、导热系数λ和热扩散系数H进行了实际测量和校正。

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Uses: diffusion pump oil for heating, temperature heat presses.

用途: 用于油扩散泵加热 、 高温塑机加热.

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The Al-Cu eutectic brazing metal is made to braze pure aluminium substrate in vacuum. The diffusion phenomenon of Cu in pure aluminum bar under different brazing temperature and heat preservation time is investigated by means of SEM and EDS.

制备Al-Cu共晶合金钎料，用SEM和EDS研究不同钎焊温度和保温时间条件下，纯铝棒料基体对接真空钎焊接头Cu元素的扩散行为。

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The SiC/ Al laminated graded composites were fabricated by vacuum hot-pressure method, and the effective joining among the composites of different volume fraction of SiC particles was realized by heat diffusion pressure.

用真空热压法制备了SiC Al层状梯度复合材料；采用热压扩散工艺，实现了不同SiC含量的复合材料间的有效连接。

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A method of surface metallization of diamond, temper powder diffusion heat treatment, was developed.

研究粉末扩散法使金刚石表面金属化的工艺.

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Insulation used to prevent heat diffusion, as from a steam pipe.

蒸汽一进入排气管就要冷却.

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Vertical microcrack originated in the process of heat treatment resulted in a higher thermal diffusion coefficient.

热处理使EB-PVD热障涂层中产生了垂直于基体表面的微裂纹，导致涂层热扩散系数高于沉积态。

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The influence radius of a single well can be predicted through analyzing the heat balance and the thermal diffusion.

单个热储井的影响半径可以通过热平衡和热扩散原理求得。

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Based upon analysis of thermal performances of radiator thermal characteristics equation of radiator is presented. The influences of radiator cover on heat diffusion and heat metering are discussed; at the same time reasonable measures proposed for radiator cover setting, which is significant to energy-saving.

分析了散热器的热工性能，给出了散热器的热工特性方程，论述了加设暖气罩后对散热器散热以及热计量的影响，提出了合理的暖气罩设置对节约能源的意义。

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