frequency sweep短语¹⁴⁴⁹⁷²⁺² 基本例句 频率扫描 Having measured the simple beam natural frequency through the pulse hammer experiment, draw the mode of vibration, and obtain the damping ratio by the sine frequency sweep experiment. 同时，由脉冲锤击实验来测定被测对象的固有频率，进一步得到其振型；又由正弦信号实验计算得到阻尼比。 lib.swpu.edu.cn