本文利用互功率谱的方法对安装在混凝土地板上的小型排气扇工作时产生的结构声功率流进行了现场测 量。对不同劲度系数的隔振支架对结构声功率流的影响进行了比较。%A measurement is made for the structure-borne power flow of a ventilation fan mounted on a concrete floor by using the cross spectrum method.The measured power flows are compared for the different anti-vibration mounts with different stiffnesses.
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