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- radio relay horizon distance 无线电接力视距
- There has always been a problem in using radio relay in overseas communications. 在利用无线电转播进行海外通迅方面一直存在着一个问题。
- Telegraphic instrument that transmits and receives printed messages and data via telephone cables or radio relay systems. 通过无线电中断系统传送和接收列印资讯和资料的各种电报器械。
- It is very essential to make emphatically a study of chanel fading so as to design reasonably radio systems and develop high capacity digital radio relay systems. 指出加强对微波传输衰落的研究,对于经济合理地进行系统设计、发展我国高速率的数字通信是至关重要的。
- Offers loyalty, encouragement and support to other amateurs, local clubs, and the American Radio Relay League, through which Amateur Radio in the United States is represennted nationally and internationally. 他对其他无线电爱好者、地方俱乐部和代表本国的国家协会表现忠诚、鼓励和支持。
- time division radio relay system 时间分割式无线电中继系统
- millimeter-band radio relay system 毫米波带无线电中继系统
- microwave radio relay communication 微波中继通信
- High Altitude Radio Relay System 高空无线电中继系统
- The angular distance of a celestial object above the horizon. 地平纬度地平线以上天体的角度距离
- time-division radio relay system 时分制无线电中继系统
- millimeter wave band radio relay system 毫米波接力通信系统
- trans-horizon radio relay system 超视距无线电中继系统
- ultra-short wave radio relay equipment 超短波接收机
- angle-modulated radio relay system 调角无线电接力系统
- tropospheric scatter radio relay system 对流层散射无线中继系统
- The sea seemed to melt into the sky at the horizon. 在水平线处，海洋似渐渐没入天际。
- The sun appeared above the horizon. 太阳出现在地平线上。
- The mountainous island loomed on the horizon. 那座巨大的岛屿隐隐约约浮现在地平线上。
- radio horizon distance 无线电地平线距离
