film coating

• 薄膜包衣,涂膜,薄膜敷层

film coating的用法和样例：

例句

1. The colour of the film will change after immersion in water.
   涂膜在浸水后，颜色会发生变化。
2. The coating material of copolymer has good hardness and glossiness.
   共聚物的涂膜具有较好的光泽度及硬度。