fracture toughness test

例句：

1. 1. The engineer conducted a fracture toughnesstest on the material to determine its strength.
   工程师对材料进行了断裂韧性测试，以确定其强度。
2. 2. The company is conductinga fracture toughness test on new materialsto improve their durability.
   该公司正在对新材料进行断裂韧性测试，以提高其耐用性。
3. 3.The fracture toughness test results showed thatthe material had excellent resistance to crack propagation.
   断裂韧性测试结果显示，该材料具有极好的抵抗裂纹扩展的能力。