这是一款用于3D打印的波纹管模型，整体设计简约实用，具有柔韧性和伸缩性，可用于制作排水管、护线管、机械连接件等教学演示与工程验证，打印后可直接用于功能性实验。

This is a corrugated pipe model for 3D printing. It features a simple and practical design with flexibility and extensibility, suitable for making drain pipes, wire protection tubes, and mechanical connectors for teaching demonstrations and engineering verification. The printed model can be directly used for functional testing.