求翻译：7. 消防设备的电源电力电缆采用阻燃耐火型交联聚乙烯绝缘电力电缆，除消防设备外的电源电力电缆采用阻燃型交联聚乙烯绝缘电力电缆，电力电缆的阻燃等级及规格详见相应的系统图。是什么意思？

Fire fighting equipment, the power supply power cable with of retardant fire crosslinked polyethylene insulated power cables, the power power cables in addition to the fire-fighting equipment flame retardant cross-linked polyethylene insulated power cable, power cable, flame retardant grade and spec

7.the fire equipment in power cables for electric fire-retardant crosslinked polyethylene insulated power cables, fire equipment, except the power cables for electric-retardant crosslinked polyethylene insulated power cable, power cable of the flame retardant grades and specifications as detailed in

7. The fire fighting equipment power source power cable uses the being flame-resistant fireproof crossing linking polyethylene insulation power cable, uses the being flame-resistant crossing linking polyethylene insulation power cable besides the fire fighting equipment power source power cable, the

7. fire-fighting equipment power supply power cable with flame resistant-xlpe insulated power cable, with the exception of fire-fighting equipment power supply power cable with flame retardant cross-linked polyethylene insulated power cables, power cable fire-retardant rating and specifications as d

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