differential zinc coating

例句：

1. 1. Thenew car has a differential zinc coatingthat protects the engine from wear andtear.
   这款新车有一个差动锌涂层，可以保护发动机免受磨损。
2. 2. The engineer useda differential zinc coating to improve thedurability of the metal parts.
   工程师使用差动锌涂层来提高金属部件的耐用性。
3. 3. The construction company applied a differential zinc coating on all the steel beamsto prevent corrosion.
   建筑公司在所有钢梁上应用了差动锌涂层，以防止腐蚀。