1.
image frequency
像频;镜频;镜频;镜像频率;镜像频率;帧频
2.
center frequency
中心频率未调制频率
3.
frequency theory of hearing
听觉频率论 听觉频率论
4.
Frequency spectrum element, carrier frequency. Frequency type can be specified.
频谱元件，载波频率。可指定频率类型。
5.
UHF resonance frequency meter
超高频谐振式频率计
6.
Intermediate frequency amplifier center frequency
中频放大器的中心频率
7.
modulation frequency ratio
调制频率与载频之比
8.
mixer-filter frequency synthesizer
混频滤波式频率合成器
9.
The interval between any two frequencies having a ratio of2 to1.
倍频程频率比率为2比1的两个频率的间隔
10.
amino acid frequency
氨基酸（使用）频率
11.
frequency response characteristics
频率响应特性（图）
12.
modulation frequency-carrier ratio
调制频率－载波比率
13.
permeability-frequency convertor
导磁率－频率变换器
14.
full power response
最大功率输出频率特性
15.
distress frequency
无线电频率遇险呼救频率
16.
frequency of optimum traffic
最佳通信频率最佳传输频率
17.
automatic frequency control
自动频率控制自动频率调整
18.
frequency stability analyzer
频率稳定分析器频率稳定分析仪