Copper is a good medium for the conduction of heat and electricity.

铜是热和电的良导体。

Based on the constitutive theory of thermoelasticity , the theory of conduction of heat in solids and the three-dimensional equal parameter element method.

文中介绍了适用于结构构件静力分析的有限元程序设计方法,其依据一般热弹性材料的本构方程、热传导理论和空间等参元理论。