constant amplitude短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 n.不变幅度 The damage variable is defined as the residual strain of concrete under constant amplitude fatigue loading, and the law of cumulative damage and its evolution are obtained. 由等幅疲劳残余应变，定义了损伤变量，得到了相应的损伤积累和演化规律。 cnki