powdered aluminum

例句：

1. 1. The powdered aluminum was used to coat the surface of the metal.
   粉末铝被用来涂覆金属的表面。
2. 2.In this process, the powdered aluminum reacts with oxygen to form a protective layer.
   在这个过程中，粉末铝与氧气反应形成一层保护层。
3. 3. The powdered aluminum is then heated and compacted into sheets for further processing.
   然后粉末铝被加热并压缩成片材以进行进一步加工。