porous mass

基本解释

Porous solid mass is an important material base in the formation of debris flow.
松散固体物质是泥石流形成的重要物质基础。
Peat is a porous, brown mass of organic matter in which twigs, roots, and other plant parts can still be recognized.
这是一种具孔隙的，褐色的有机物质块体，其中还可见到细枝、根以及其它一些植物部分。
A mathematic model based on heat and mass transfer in porous media was established for the simulation of paper drying in dryer section of paper machine.
根据多孔介质干燥过程中的传热传质理论，结合纸机工作特点，建立了纸页的干燥过程物理模型和数学模型。