An energy equation that incorporates a heat transfer model of porous medium is developed based on the first thermodynamiclaw.
以热力学第一定律为基础，引入多孔介质换热模型，建立了多孔介质发动机的能量方程。
2
Based on the second thermodynamiclaw and theory of sediment transport, this paper explores the intrinsic mechanism for this phenomenon.
本文基于热力学第二定律和泥沙运动力学的相关理论，探讨了形成这一特殊现象的内在机理。
3
According to the thermodynamiclaw and the characteristics of agricultural ecological system, the entropy of agricultural ecological system was defined.