polyester film

例句：

1. 1. This polyester film is used to protect the electronic devices from dust and moisture.
   这种聚酯薄膜用于保护电子设备免受灰尘和湿气的影响。
2. 2.The polyester film was used as a protective layer on the surface of the car body.
   聚酯薄膜被用作汽车车身表面的保护层。
3. 3.The polyester film is widely used in packaging industry due to its excellent properties such as transparency, flexibility, and durability.
   由于其优良的特性如透明度、柔韧性和耐用性，聚酯薄膜在包装行业得到了广泛的应用。