中波天线大部分采用铁塔天线，非特殊地形或特别要求的服务区外，均采用不定向天线。

While mid-wave antenna is mostly iron tower antenna, we do not use directional antenna except that we need special service in special area.

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此文对铁塔基价的确定及铁塔架设、铁塔基础、天线地面基础的定额编制，进行了较为详细的介绍。

This paper gives a detailed introduction to the determination of the base price of the tower and the norm making of tower erection, tower foundation and the ground - based foundation of the antenna.

youdao

此文对铁塔基价的确定及铁塔架设、铁塔基础、天线地面基础的定额编制，进行了较为详细的介绍。

This paper gives a detailed introduction to the determination of the base price of the tower and the norm making of tower erection, tower foundation and the ground - based foundation of the antenna.

youdao