For instance, the maths it USES to describe how share prices move comes from the equations in physics that describe the diffusion of heat.

例如，其用以描述股价变动的数学方法来自物理学中描述热扩散(diffusion of heat)的一些等式[4]。

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The mass transfer equation was introduced into heat transfer model of falling film evaporation. The radial velocity, mass diffusion coefficient and variation of film thickness were taken into account.

将传质方程引入到垂直管降膜蒸发传热模型中，求解时考虑了径向速度、质量扩散系数和膜厚变化对传热的影响。

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The mixture ratio of C40 Marine high performance concrete is optimized through test of the hydration heat of binding material, slump, chloride ion diffusion coefficient, anti-crack rand of concrete.

通过测试胶凝材料水化热、混凝土的坍落度和氯离子扩散系数、抗裂等级等性能，对C40海工混凝土的配合比进行了优化设计。

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The concept uses alternating materials with varying rates of diffusion to move heat around and create a thermally invisible region.

ENGADGET: Researchers working on thermal cloak, Predators trill their disapproval