core coating

例句：

1. 1. The new car has a core coating that protects the engine from corrosion.
   这款新车有一层核心涂层，可以保护发动机免受腐蚀。
2. 2. The engineer used a core coating to coat the metal surface for better strength.
   工程师使用一种核心涂层来涂覆金属表面，以增强其强度。
3. 3. The company uses core coating technology to improve the durability of its products.
   该公司采用核心涂层技术来提高其产品的使用寿命。