1·The basic functions such as light-off-time, electromotive force output, response time and oscillograph trace under four different frequencies are obtained and analysed.
得到并分析了传感器的升温激活时间、响应性能和电动势输出以及在不同波动频率下的波形图。
2·One held a piece of film firmly against the end of the oscillograph and got a bleary contact print of a trace too faint to photograph without repetitive stimulation.
由一个人拿着一块胶片紧紧地抵在示波器这一端以便在没有反复刺激作用情况下对微弱得无法摄影的痕迹获得一个模糊的接触印痕。