标准查询 标准查询地面无线电中继系统中使用的设备的测量方法.第2部分:子系统的测量.第2节:备用通道转换设备
Methods of measurement for equipment used in terrestrial radio-relay systems; part 2: measurements for sub-systems; section 2: stand-by channel switching equipment
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标准查询Methods of measurement for equipment used in terrestrial radio-relay systems; part 2: measurements for sub-systems; section 2: stand-by channel switching equipment
