借助虚拟示波器和采用控制变量法,探究铝棒发声的频率与其横截面积、长度、手捏部位等影响因素的关系,进行多组对比实验研究,得到了影响铝棒发声频率的初步实验结论. With the aid of virtual oscilloscope and control variable method, the relationship between the sound frequency of aluminum rod and its influencing factors such as its cross-sectional area, length and pinch position was explored. The comparative experiments were conducted and the preliminary experimental results were obtained.