contact surface

例句：

1. 1. The new design of the phone has a smoother contact surface.
   这款新手机的设计有一个更平滑的接触面。
2. 2.The researchers found that the contact surface played a crucial role in the process.
   研究人员发现，接触面在过程中起着至关重要的作用。
3. 3. The engineers worked on improving the contact surface to enhance the device's performance.
   工程师们致力于改进接触面以提高设备的性能。