Considering volumetric heat capacity and thermal penetration, the paper systematically analyzed the changes of regenerator performances when the non-metallic matrices were used.
从蓄冷填料的体积比热容和热穿透深度两方面入手,对脉冲管制冷机蓄冷器非金属化后的性能变化进行了系统的机理分析。
By the Volume Comparison Theorem、Busemann function and Gromov Hausdorff limit,the paper discusses the topological properties of an open Riemannian manifold with nonnegative Ricci curvature.
应用体积比较定理、Ｂｕｓｅｍａｎｎ函数、ＧｒｏｍｏｖＨａｕｓｄｏｒｆ极限等讨论了具非负Ｒｉｃｉ曲率的完备非紧黎曼流形的拓扑性