Ferrite ductile iron的用法和樣例：
例句
- Crack nucleation and propagation in wear-resistant bainite ductile cast iron were investigated by press trace method and SEM.
采用壓痕法及掃描電鏡觀(guān)察，研究了抗磨貝氏體球鐵中裂紋的形核與擴展。 - The effect of austenitizing temperature on structure and properties of vanadium bainite ductile cast iron is studied in present research.
研究結果表明，釩使貝氏體轉變所要求的奧氏體化溫度范圍增大，并使貝氏體球鐵的硬度提高。
