求翻译：智能电网、无源光网络、光纤复合低压电缆、骨干通信网、中压通信接入网、低压通信接入网、业务融合、物理隔离、逻辑隔离、信息安全是什么意思？

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Smart Power grid, passive optical networks, optical fiber composite low voltage cables, backbone network, communications network access in the medium-voltage and low-voltage communications network access, business integration, physical isolation, logical separation, information security

The intelligent electrical network, the passive light network, the optical fiber compound low tension cable, the backbone communications network, press the correspondence access network, the low pressure correspondence access network, the service fusion, the physical isolation, the logical isolation

Smart grid, passive optical networking, optical fiber composite pressure in low voltage cabling, backbone communication network, access network, low voltage communication access network, business integration, physical isolation, logical isolation, information security

正在翻译，请等待...