但是也有可能是任务时钟或通讯设备退化，这意味着它试图按错误的频率通信。
But it's also possible that the mission clock or communications equipment may have degraded, meaning that it's trying to communicate on the wrong frequencies.
通信设备主要包括EPON通讯设备(olt、onu)及电力线载波通信机。
The communications equipment, including EPON communications equipment (OLT, ONU) and power line carrier communication equipment.
通信设备主要包括EPON通讯设备(olt、onu)及电力线载波通信机。
The communications equipment, including EPON communications equipment (OLT, ONU) and power line carrier communication equipment.
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