Install electromechanical, analog and digital trunking systems, circuits and equipment in telecommunications central offices and switching centres.
在电信中心办公室和交换中心安装工机电，模拟和数字集群系统，电路和设备。
Install electromechanical, analog and digital trunking systems, circuits and equipment in telecommunications central offices and switching centres.
在电信中心办公室和交换中心安装工机电，模拟和数字集群系统，电路和设备。
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