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[VIP第9年] 指数:6
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适用范围：适用于广播电视和通信网络机房的设备安装、操作。
Scope of application: applicable to radio and television machine room equipment installation, operation and communication network.
适用范围：适用于广播电视和通信网络机房的设备安装、操作。
Scope of application: applicable to radio and television machine room equipment installation, operation and communication network.
