单词：ductile cast iron
ductile cast iron的用法和样例：
例句
- 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。
- Ductile iron shows exceptional resistance to shock loading.球墨铸铁具有特别的抗冲撞装卸的性能。
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