Main Maintenance Points at Radio and TV Satellite Earth Station 卫星广播电视地球站的维护要点
The results show that the main reasons of the earth resistivity's reduction is the combining effect of the diffusion of hot mineral water, the vadose of waste water around the station and rain. 结果表明测区附近热矿水的扩散、废污水的渗流和降雨等诸多因素的影响是昌黎台地电阻率多年趋势下降变化的主要原因。
This paper analyzed main disturbance factos effecting on earth tide observations of gravity station. 本文分析了影响重力台站观测资料质量的主要干扰因素。
ODU ( Out Door Unit) is one of the main equipment in satellite communication system earth station. 室外单元(OutDoorUnit,ODU)是卫星通信系统地球站的主要设备之一。