nodular iron

• 球墨铸铁

nodular iron的用法和样例：

例句

1. Basic graphite morphology types of nodular iron were introduced.
   介绍球墨铸铁中石墨的基本形态类型。
2. This iron is now typically known as Ductile Iron or S.G.Iron.
   这是铁的现在通常被称为球墨铸铁或球墨铸铁。