导热系数

A numerical model was established by combining the seven-flux model of light propagation with the two-dimensional hyperbolic heat conduction model in cylindrical coordinates. It showed that there exists a great discrepancy between the results obtained by treating the laser irradiation as volumetric absorption (i.e. taking laser scattering and absorption into consideration) and those obtained by treating the laser irradiation as the second boundary condition.

将激光传输的七流模型与圆柱坐标系内的二维双曲型导热模型相结合建立了理论模型；将激光照射处理为容积吸收(即考虑激光在生物组织中的散射和吸收)所得到的计算结果，与将激光照射处理为第二类传热边界条件所得到的计算结果相比，两者差别很大；考察了激光照射下散射系数和吸收系数对生物组织内双曲型导热的影响。

The heat conductivity calculation has been divided into two parts, form the borehole to the exposure of cement mantle and in the formations, as for corresponding to different borehole structures, different methods have been adopted to sum the overall heat transfer coefficients and numerical method is used to calculate the heat loss on each nodal point, furthermore, through the model proposed herein, the degrees of influences of different borehole structures on heat loss could be calculated in order to get the most economic and efficient borehole structure.

把导热分为井筒到水泥环外壁和地层导热两部分计算，对不同的井筒结构采用不同方法计算总传热系数，数值法求解每个节点处的热损失，并通过模型对比计算了不同井筒结构对井筒热损失的影响程度，得到最经济有效的井筒结构。

Developed by the company as a new type of water-repellent QY-rockwool plate with low thermal conductivity.

我公司最新研制的新型QY-憎水型氧化岩棉板具有导热系数低。

Keywords PCMs,the solid-liquid phase change,conductivity factor,time-temperature curve,comparison curve,strenghten heat conduction

Article From 河北工业大学；化学工艺硕士论文 2004年度贮能材料；固液相变；导热系数；时间-温度曲线法；比较法；强化传热

Through the test on physical properties of snow and ice, the free-area ratio, the snow-melting velocity and the snow-melting time, the melting behavior of snow and ice under different weather conditions are obtained and compared with simulated results.

在此基础上，提出了一种有利于系统节能的折中加热方案。3道路融雪实验研究建立了一个小型道路融雪实验系统，采用基于径向热流的直接加热法获得了水泥混凝土路面的导热系数，并初步分析了含水率对路面传热过程的影响。

In the Presented paper the uncertainty caused by measure principle of the cylinder method for measuring the thermal conductivity of thermo-insulating materials with heating of self-compensation is analyzed with a numerical method.

本文对测定保温材料导热系数的自补偿圆管法的原理误差进行了分析。

This paper describes in-situ testing on thermal conductivity of lightweight thermal insulating wall by the guarded hot plate method .

利用防护热板法对轻质保温墙体导热系数进行了现场测试，通过数值分析和实验，并进行了对比测试，证明了该方法应用于此类墙体热工性能测试的可行性。

Secondly, the influence of thermal conductivity on thermal barrier effect was investigated adequately.

然后，本文重点分析了导热系数作为影响隔热效果最本质因素对隔热效果的影响。

The research of the effect of inner and outer factors on the thermal barrier effect went along combining of the temperature and inner microstructure in the paper.

本文把温度和涂层内部结构组合来研究各种影响因素对导热系数的影响。

Combined identifications can be carried out for thermal parameters and boundary conditions etc.

该模型不仅考虑了非均质和参数分布的影响，而且也便于正反演问题的敏度分析，可对导热系数和边界条件等宗量进行有效的单一和组合识别。

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％。