So, we must analyze the causes of prestation unjustified enrichment and non-prestation unjustified enrichment and reconstruct its constitutive requirements.

因此，应该从不当得利制度的物权变动理论基础视角分别型和非型不当得利的物权变动原因进行分析，重新建要件。

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件静力分析的有限元程序设计方法,依据一般热弹性材料的本方程、热传导理论和空间等参元理论。