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电暖宝的原理是什么
更新时间: 2020-07-14 00:00:00  

电暖宝的原理是在电暖宝里有耐热陶瓷,里面是300W/220V的电炉丝,当接通电源后,加热到75度,温控器就切断电源,加热终止,当电暖宝的温度恢复到40度后,就能继续加热。

电热暖手宝外形新颖、储热量大、保温时间长,为冬季暖手、暖足的理想用品。电暖宝分为电极式和电热丝式两种。

关键词: 原理 什么

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