求翻译：6) 箱后面板上AC INPUT插座是市电互补或带市电充时接市电（此功能需根据客户要求订做，一般无此功能）。是什么意思？

6) box ac the input socket on the rear panel is a charge of electricity complement each other or with electricity mains input (this function is based on customer requirements, generally no such function).

6) on the rear panel chassis AC INPUT mains socket is a complement or a mains charge when mains (This feature must be in accordance with customer requirements, without this feature in general).

6) on the box rear panel AC the INPUT plug is the city electricity supplementary or the belt city electricity sufficient when meets the city electricity (this function to have to act according to customer request making to order, does not have this function generally).

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