1.
radio frequency emission testing
无线电频率放射测试
2.
international distress radio frequency
国际呼救无线电频率
3.
a radio-frequency amplifier.
一种无线电频率放大器。
4.
public safety radio frequency
公共安全无线电频率
5.
distress frequency
无线电频率遇险呼救频率
6.
very high frequency(abbr. VHF) radio frequency of 30 to 300 megahertz
甚高频（30到300兆赫的无线电频率）.
7.
low frequency radio-range
低频无线电导航信标
8.
lowmedium frequency radio range
低中频无线电导航信标
9.
vBNS) VHF radio; VHF transceiver
甚高频无线电收发机
10.
variable-audio-frequency radiosonde
变声频无线电探空仪
11.
ultrahigh frequency radio engineering
特高频无线电工程学
12.
frequency tolerance of radio transmitter
无线电发射机频率容限
13.
citizens' band
[美]民用无线电台频带(缩
14.
marine frequency
海上无线电通信频率
15.
LOR (Low-frequency Omnidirectional Radio Range)
低频全向无线电信标
16.
medium frequency non-directional radio beacon
中频全向无线电信标
17.
four course IF radio range
四航向中频无线电信标
18.
very high frequency omnirange
甚高频全向无线电信标