edge crack短语¹⁴⁴⁹⁷²⁺² 基本例句 板边裂纹 In this paper, a new method of dynamic fracture analysis of three point bending beam with an edge crack is presented by applying the elementary bending theory of beam and the line spring model. 利用梁的初等弯曲理论和线弹簧模型建立了三点弯曲裂纹梁的动态断裂分析方法，该方法使计算大为简化。 cnki