gray cast iron的用法和樣例：
例句
- The different types of austenite in gray iron present different behaviours during the breaking process of the material.
灰鑄鐵中不同類型的奧氏體枝晶在材料斷裂過程中具有不同行為。 - Globular microstructure of the semi-solid hypoeutectic gray iron was developed by the controlled casting.
用控制鑄造法獲得了亞共晶半固態灰鑄鐵球狀組織。
