发布时间:2025-02-01 18:44:34
这是一般的风扇马达线圈吧.其实要拆下铁芯并不难,拿扁平的起子从铁芯周围的空隙撬起来就行了.
小红和小明在学习欧姆定律的过程中分别进行下列探究活动①小明选了以下器材等测电阻rx510Ω
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