为探讨闪声融合频率与听觉疲劳的关系，测量了80名接触噪声工人和60名非接触噪声人员的脉冲声和双音调闪声融合频率。
Auditory fusion frequency (AFF) of impulse sound and paired pitch in 80 workers exposed to noise and 60 non exposed ones were measured to study the relationship between AFF and auditory fatigue.
本文回顾了已知的正交场放大管（CFA）噪声性能的实际测量数据，并且讨论了脉冲调制的CFA在脉冲多普勒雷达中的有用特性。
The known actual measured noise characteristic data of CFAs are reviewed, and the usefulness of pulse-modulated CFAs in pulsed Doppler radars are discussed in this paper.
系统包括CCD驱动脉冲产生电路、低噪声测量放大电路、自适应比较电路、单片机控制电路以及上位机处理程序。
The system consists of driving pulse generating circuit for CCD, instrumental amplifier with low noise, MCU controlling circuit and PC program for dealing with the data conveyed by MCU.
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