frictional metal chock

例句：

1. 1.The car was fitted with a frictional metal chock to prevent it from rolling away.
   为了防止汽车滑移，安装了摩擦金属楔子。
2. 2.The engineer used a frictional metal chock to secure the machine in place during maintenance.
   工程师使用摩擦金属楔子在维护期间固定机器。
3. 3. The construction workers used frictional metal chock to hold the beam together while they worked on it.
   建筑工人使用摩擦金属楔子在工作期间固定梁。