powdered magnesium

例句：

1. 1. This powdered magnesium is used in the production of glass.
   这种粉末状的镁用于玻璃生产。
2. 2. The powdered magnesium was added to the paint to improve its durability.
   将粉末状的镁添加到油漆中以增强其耐用性。
3. 3. In some cases, powdered magnesium can be used as a substitute for sand in construction projects.
   在某些情况下，粉末状的镁可以作为建筑项目中沙子的替代品。