Based on pedagogical experience, a scheme of diagrammatic representation of fundamental dependentequations relating thermodynamic functions is suggested.
通过多年教学实践，归纳出热力学函数间基本关系式的图示法。
2
By applying a fixed point theorem, the authors study the existence of positive periodic solutions to a class of differential equations with stated-dependent delay.
运用不动点定理，研究一类具状态依赖时滞的微分方程周期正解的存在性。
3
Natural vibration and dynamic response on time dependent structure are analyzed, the equations of natural vibration and dynamic response are set up.