In some literatures concrete temperature is calculated by converting its heat insulating layer into an air heat exchange coefficient.
有的文献把保温层折算为对空气的热交换系数来计算混凝土的温度。
This paper briefly introduces the performance requirements of the insulating materials such as the thermal conductivity, heat expansion coefficient, and density, etc.
简要介绍了保温隔热材料的性能要求（如导热系数、密度、膨胀系数等）、作用原理以及影响材料导热系数的主要因素。
This paper introduces the basic concepts of insulating glass unit U values(heat transfer coefficient)and in GB/T22476 standard the basic conditions&mathods for calcuting glass unit U values.
介绍了中空玻璃U值（传热系数）的基本概念和GB/T22476标准对中空玻璃U值的计算和测定所规定的基本条件及方法。
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