whiteheart malleable iron

例句：

1. 1. The white heart malleable iron is used in the manufacturingof various tools and machinery.
   这种白心易锻铁用于制造各种工具和机械。
2. 2. The steel industry relies heavily on thistype of malleable iron for itsproduction processes.
   钢铁行业依赖这种易锻铁进行生产流程。
3. 3. The white heart malleable iron has excellent ductility, making it ideal for use in aerospace engineering.
   这种易锻铁具有良好的可塑性，非常适合航空航天工程使用。