ductile crack

例句：

1. 1. The ductile material could be easily stretched and returned to its original shape.
   这种可塑性材料可以被轻易拉伸并恢复到其原始形状。
2. 2. The ductile steel is widely used in the construction industry.
   这种可塑性钢材在建筑业中被广泛使用。
3. 3.The ductile metal was prone to deformation under high temperature.
   这种可塑性金属在高温下容易变形。