normal flange

例句：

1. 1. The machine's normal flange is designed to fit perfectly with the other parts of the assembly.
   机器的正常法兰设计得与组装的其他部件完美契合。
2. 2.The engineer used a special tool to remove the old flange and install the new one.
   工程师使用特殊的工具来移除旧的法兰并安装新的。
3. 3.The flange was made of high-quality steel, ensuring that it would last for many years.
   法兰是由高质量的钢材制成的，以确保它能够持续多年。