grate layer material

例句：

1. 1.The engineer used a special grate layermaterial to make the machine run more efficiently.
   工程师使用一种特殊的研磨层材料使机器运行得更加高效。
2. 2. The grate layermaterial was designed to prevent food from fallingthrough the grill.
   这种研磨层材料被设计用来防止食物从烤架中掉落。
3. 3. The grate layer material is madeof high-quality steel and is durableenough to withstand heavy use.
   这种研磨层材料是由高质量的钢材制成的，足够耐用以承受重压。