【结构动力学第7课】3.1单自由度无阻尼简谐振动：动力响应、动力系数、共振和动力效应

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A 31-minute video from 李小平老师: “【结构动力学第7课】3.1单自由度无阻尼简谐振动：动力响应、动力系数、共振和动力效应”.

Video by 李小平老师, played through YouTube's embedded player.