antenna support meaning in Chinese

天线杆
天线支柱

Structural standard for antenna support structures and antennas
天线支撑结构物和天线的结构标准
Structural standards for steel antenna towers and antenna supporting structures
钢天线塔和天线支持结构的结构标准
Structural standards for steel gin poles used for installation of antenna towers and antenna supporting structures
天线塔和天线支撑结构的安装用钢起重把杆的结构标准