underseal中文什么意思

底封

防蚀涂层

基层处治

• asphalt underseal-work:    沥青封底工作

英文释义

名词

1. seal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion
   同义词：undercoat

百科释义

Underseal is a thick resilient coating applied to the underbody or chassis of an automobile to protect against impact damage from small stones, which would rapidly chip ordinary paint, allowing rusting to begin.