1.
electromagnetic waves,eg X-rays,radio-waves,light waves
电磁波（如X 射线、无线电波、光波）.
2.
Radio waves travel in straight lines.
无线电波是直线传播的。
3.
radio wave propagation in the ionosphere
电离层无线电波传播
4.
static at radio wavelengths.
无线电波长的静电干扰。
5.
radiowave penetration instrument
无线电波透视法仪器
6.
transmit messages via radio waves.
通过无线电波传输信息。
7.
radio-wave refractive index of air
无线电波的空气折射率
8.
transmit(a signal,etc)by radio waves
用无线电波发送（信号）
9.
Radio waves are similar to light waves except their wavelength is much greater.
无线电波与光波相似，但无线电波的波长要长得多。
10.
radio (directional) beam
无线电(定向)波束
11.
radio-communication line of centimetric wave
微波无线电通信线路
12.
radio landing beam
无线电着陆导航波束
13.
Citizens' Band Radio [CBR]
市民业余波段无线电
14.
radio-microwave telemetering system
无线电-微波遥测系统
15.
radio interference field intensity meter
无线电干扰波场强计
16.
marine frequency band
船用无线电通信波段
17.
beacon ground S-band
地面S波段无线电信标
18.
beacon ultra-portable Sband
小型S波段无线电信标