grinding paste

例句：

1. 1. This grinding paste is perfect for grinding metal surfaces.
   这种研磨膏非常适合磨金属表面。
2. 2. The engineer used a special grinding paste to smooth the surface of the machine.
   工程师使用一种特殊的研磨膏来平滑机器的表面。
3. 3. The grinding paste was applied evenly on the workpiece to achieve the desired finish.
   将研磨膏均匀地涂在工件上以达到所需的光洁度。