wall building controlled coefficient 造壁控制系数

Wall mean sound absorption coefficient 壁面平均吸声系数

wall friction coefficient 墙摩擦系数

Wall thickness coefficient 壁厚系数

coefficient of wall friction 壁面摩擦系数

chlorine wall decay coefficient 管壁余氯衰减系数

wall heat transfer coefficient 壁传热系数

wall thermal insulation coefficient 墙体热绝缘系数

wall thickness increase coefficient 壁厚增大系数