fin structure meaning in English

指挥台围壳结构

For fin system , the spatial distributions of three defined physical quantities , filling ratio , extend measure and stretch direction , are described for general fin structures . based on which the heat transfer between fin system and fluid is modeled mathematically
对于翅片强化对流换热，提出用填充率、扩展量和伸展方向这三个物理量在空间内的分布来描述翅片系统的一般结构，并建立了相应的热量输运模型。