brittle-ductile transition temperature

例句：

1. 1.The material undergoes a brittle-ductile transition at a certain temperature.
   该材料在某一温度下发生脆性-韧性转变。
2. 2. This material has a uniquebrittle-ductile transition temperature.
   这种材料的脆性-韧性转变温度独特。
3. 3.The transition temperature is crucial for understanding themechanical properties of the material.
   脆性-韧性转变温度对于理解材料的机械性能至关重要。