high-silicon cast iron

例句：

1. 1.This high-silicon cast iron is used for making heavy machinery parts.
   这种高硅铸铁用于制造重型机械部件。
2. 2.The high-silicon cast iron has excellent wear resistance and heat resistance.
   这种高硅铸铁具有极好的耐磨性和耐热性。
3. 3.Due to its high-silicon content, the casting iron has a relatively low melting point.
   由于其高硅含量，铸铁的熔点相对较低。