austenitic grain-size classification

例句：

1. 1. The steel is austenitic, which means it has a high carbon content.
   这种钢是奥氏体的，意味着它含碳量高。
2. 2.Austenite is the most stable form of iron in its austenitic grain-size classification.
   奥氏体是铁在其奥氏体组织分类中最稳定的形态。
3. 3. In the austenitic grain-size classification, the grain size refers to the size of the crystallites within the material.
   在奥氏体组织分类中，晶粒尺寸是指材料内部晶体的大小。