...( acousto-optic modulator )产生两对具有同调性(coherence)且角度相互正交的线偏极化光，两个线偏光间具有拍频(beat frequency)作为外差干涉讯号来源，由于以..
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文章详细信息 关键词： 光速;;调制;;差频;;数码 [gap=423]Keywords: light speed;modulate;beat frequency;digital
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beat frequency receiver 拍频接收机
beat frequency amplifier [电子] 拍频放大器
beat frequency detector 拍频检波器 ; 差频检波器
beat frequency meter 差频频率计
ciliary beat frequency 对人鼻腔纤毛摆动频率 ; 测定纤毛摇动频率
beat frequency electrotherapy unit 差频电疗机
beat-frequency 拍频 ; 查频 ; 差频
interaxial mode beat frequency 轴间模拍频 ; 轴间角
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The envelope of the beat frequency is depicted as the grey areas.
信封的摆动频率是描述的灰色地带。
The influence of time length and beat frequency on radar range is discussed.
讨论了信号时长和差拍频率对雷达作用距离的影响；
The changes of the myocardial beat frequency before and after administration were counted.
通过计数器计数给药前后心肌细胞搏动频率的变化。
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