... Hellschreiber system 海尔书写器系统 heterodyne frequency 外差频率 heterodyne relay system 外差中继系统 ...
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外差频率计 heterodyne frequency meter
外差式频率计 [电子] heterodyne frequency meter
扫描频率外差式分析器 sweep frequency heterodyne-type analyzer
还在理论上分析了射频功率调谐外差频率的原理。
In addition, a theoretical analysis is made for the offset frequency being tuned by RF input power.
数字自适应外差滤波器运用外差调制的概念，使滤波在低频率处操作，从而降低了滤波器的复杂程度。
Digital adaptive heterodyne filter adopts the heterodyne-modulation conception, which makes the filter work in low frequency and lessens the complexity of design.
由于外差或频差效应，能够得到多普勒频率。
The Doppler frequency can be obtained as a heterodyne or beat effect.
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