迁移微分 meaning in English

convected differentiation

In accordance to comprehensive analysis of the transient heat and mass transfer through the adobe building enclosure in the hygroscopic range , it is first to draw up the combined thermal and moisture transfer differential equations through wall - made - of - rammed - soil
通过对处于吸湿区范围的生土建筑围护结构的传热传质规律的详细分析和研究，首次建立了生土建筑围护结构的热质迁移微分控制方程。