triplex film applicator

例句：

1. 1. The triple-layer film applicator is designed to provide a uniform coating on the surface of the material.
   这种三重层薄膜施涂器设计用来在材料表面提供均匀的涂层。
2. 2.The applicator was used to apply the paint to the wall, ensuring a smooth finish.
   施涂器被用来将油漆涂抹在墙上，确保光滑的表面。
3. 3.The applicator is essential for applying the protective coating to the metal parts during the manufacturing process.
   施涂器对于在制造过程中将保护涂层施加到金属部件上是必需的。