seal structure

例句：

1. 1. The new product has a unique seal structure that makes it easy to use and maintain.
   新产品具有独特的密封结构，使其易于使用和维护。
2. 2. The seal structure of the container is designed to prevent leakage during transportation.
   容器的密封结构设计用于在运输过程中防止泄漏。
3. 3. The seal structure of the door is crucial for ensuring security and preventing unauthorized access.
   门的密封结构对于确保安全和防止未经授权的进入至关重要。