wedge contact

例句：

1. 1. The wedge contact between the two plates is what allows them to slide smoothly over each other.
   两个板之间的楔形接触使得它们能够平滑地相互滑动。
2. 2.The wedge contact point was where the two pieces of metal met.
   楔形接触点是两块金属相接触的地方。
3. 3.In order to improve the performance of the machine, engineers need to optimize the wedge contact design.
   为了提高机器的性能，工程师需要优化楔形接触的设计。