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- This high frequency alternating current produces the high frequency radio waves mentioned in the previous chapter. 这种高频交流电流产生前一章提到过的高频无线电波。
- propagation of high frequency radio wave 高频电波传播
- propagation of very high frequency radio wave 甚高频电波传播
- A method of detecting distant objects and determining their position,velocity,or other characteristics by analysis of very high frequency radio waves reflected from their surfaces. 雷达通过对从物体表面反射的较高频无线电波的分析发现远处的物体并测定其位置、速度或其它特征的。
- A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of very high frequency radio waves reflected from their surfaces. 雷达:通过对从物体表面反射的较高频无线电波的分析发现远处的物体并测定其位置、速度或其它特征的。
- high frequency radio wave 高频无线电波
- The gigantic cloud of highly charged particles hurled from the sun posed a threat to high frequency radio communications, satellite navigation systems and television broadcasts. 携带强大电荷的巨型粒子云从太阳猛地扑向地球，对高频无线电通讯、卫星导航系统和电视广播都形成了威胁。
- propagation of low frequency radio wave 低频电波传播
- propagation of very low frequency radio wave 甚低频电波传播
- ultra high frequency radio [UHF radio] 超高频无线电
- propagation of extremely low frequency radio wave 极低频电波传播
- propagation of medium frequency radio wave 中频电波传播
- HFRT High Frequency Radio Transmitter 高频无线电发射
- E-mail Over High Frequency Radio 短波E-mail通信技术简析
- very high frequency radio communication 甚高频通信
- High Frequency Radio Direction Finding 高频无线电测向
- High Frequency Radio Transmitter 高频无线电发射机
- HFRDF High Frequency Radio repeater Distribution Frame 高频无线转发器配线架
- propagation of extremely low frequency ELF and voice frequency radio wave 极低频与音频电波传播
- propagation of extremely low frequency and voice frequency radio wave 极低频与音频电波传播
