壁厚减薄率
thickness thinning rate
Reducing ratio of wall thickness
液膜相对减薄率
relative reduction rate of thickness of condensation film
减薄损伤
thickness-reduction damage
减薄绝缘
thinning of insulation
thickness-lightened insulation
边部减薄
edge thinning drop
reducing thinne ss on side
edge drop
strip edge drop
edge-drop