可选带电池，用市电输入电源，适合各国电网及电压不稳地区。
It can select battery, electric supply input power, it is suitable for most countries electric net and pressure.
光伏系统在小区内局部并网，不考虑将电能输入上级城市电网；
Second, within the district, the photovoltaic system is locally grid-connected without considering importing the power into the higher level electricity grid of the city;
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