metallic silicon

例句：

1. 1. The new alloy has a higher strength and better wear resistance compared to the traditional alloy.
   这种新型合金的强度更高，耐磨性更好。
2. 2. Silicon carbide is used in cutting tools and grinding wheels because of its high hardness and low thermal conductivity.
   由于其高硬度和低热导率，碳化硅被用于切割工具和磨轮。
3. 3. In electronics, silicon is often used as a semiconductor material due to its excellent electrical properties.
   在电子领域，硅常被用作半导体材料，因为它具有出色的电学性质。