screening seal coat

例句：

1. 1. The screening seal coat is used to protect the surface of the material from contaminants.
   筛选密封涂层用于保护材料表面免受污染物的侵害。
2. 2.The manufacturer applied a screening seal coat to the product to improve its durability.
   制造商给产品涂上筛选密封涂层以增强其耐用性。
3. 3. The screening seal coat was applied by hand, ensuring a uniform and consistent finish.
   筛选密封涂层是手工涂抹的，以确保均匀且一致的外观。