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对于既有太阳能热水器,又有燃气(电)热水器的家庭来说,将太阳能热水器与燃气(电)热水嚣结合起来使用,既能节省能量,又可在阴雨天或严冬季节保证热水供应。
For families with both solar water heaters and gas (electric) water heaters, combining solar water heaters with gas (electric) hot water not only saves energy but also ensures hot water supply in rainy or wintry seasons .