It added bright colorful lights, electric trolley cars, electric heat and refrigerators to our modern world.

它给我们现代社会增加了色彩缤纷的灯光，电车，电暖气和电冰箱。

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This paper introduces the principle of solid electric heat storage equipment, and accordingly analyzes its economics and application prospect.

本文在介绍固体电蓄热装置的原理基础上，分析固体电蓄热装置的经济性和应用前景。

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Photovoltaic powered electric heat pumps provide hot water for in-slab radiant heat and solar hot water panels provide hot water for the pool.

光伏供电的电热泵提供热水用于板条热辐射，太阳能热水板为泳池提供热水。

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Electric companies say that electric heat is 100% efficient compared to natural gas which is about 90% efficient.

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In-floor electric heat mats provide backup heating when there is not enough sunshine.

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Then he switched on an electric current to heat up the foil instantly to 600 degrees Fahrenheit.

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