thermal-convection coefficient 基本例句 换热系数 The coefficient of convection heat transfer increases with increasing the particle diameters.对流换热系数随着颗粒直径的增大而增大。 This paper is mainly concerned about the heat transfer coefficient of titania nano-fluids.本次工作的目的是测定二氧化钛纳米流体的对流换热系数。