【摘要】 根据工程结构的实际情况，用非均质金属材料三点弯曲试件研究了低温断裂韧性的精密测量技术。测试结果表明，阻力曲线相关系数在0．989以上。更多还原

【Abstract】 Based on the practical condition of engineering construction, the three-point bend specimens of heterogeneous metal materials were used to research the technique of precision measurement ofthe fracture-toughness at low temperature. The testing results show that relevant coefficient of resistance curves is above 0. 989更多还原