... frequency-modulation laser 调频激光器 ; 调频雷射 frequency-modulation tube 调频管 FTM Frequency Time Modulation 频率时间调制 ...
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An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.
速调管一种用速度调节的方法放大或产生超高频率的电子管。
Functions such as frequency modulation and circuit reset are achieved with different buttons and shown on the LED digital display tube.
并且通过不同按键可以实现调频，电路复位等功能并在LED数码显示管上进行显示出来。
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