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白炽灯泡在工作时灯丝的伏安特性是怎样的？ 知乎 Template






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tomski白炽灯泡在工作时灯丝的伏安特性是怎样的？ 知乎 coloring
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图12所示的白炽灯是人们常用的照明工具 请你写出下列现象中所包含的物理知识 示例 白炽灯灯丝用久了会变细灯丝在高温状态下 升华 sketch template
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