Old-fashioned rice cookers are extremely clever
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电饭锅利用水的沸点和材料的居里温度控制断电。水还在沸腾时锅底温度受到约束,水耗尽后温度继续升高,磁性元件松开,机构便切换状态。
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just a bit higher than the boiling point of waterthe magnet is no longer attracted to it