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音乐定时提醒电路，电路结构简单，使用元件少，容易制作
音乐定时提醒器电路
实用电路原理-基础电路篇48/60
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音乐定时提醒器电路
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![峨边彝族自治县气象台解除道路结冰黄色预警信号[III级/较重]](http://p3-sign.bdxiguaimg.com/tos-cn-p-0015/owQ7UEOAdSjvLFeYGBIREsLpHqCCRAehI6BeFo~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=202412130514233216A23367EE296D8AC1&requestFrom=101&x-expires=1765574063&x-signature=QlkLXjMP%2FdfQtBKGbs82RCHkb%2FE%3D)
