back coating

例句：

1. 1. The new software requires a back coating to ensure compatibility with older systems.
   新软件需要背涂层以确保与旧系统兼容。
2. 2. The engineers used a back coating technique to improve the durability of the paint.
   工程师们使用了背涂层技术来提高油漆的耐用性。
3. 3.The company is introducing a new product with a back coating that reduces environmental impact.
   公司正在推出一款新产品，其背面涂层可以减少环境影响。