Reo Music for Dummies
频率是单位时间内完成振动的次数，是描述振动物体往复运动频繁程度的量，为了纪念德国物理学家赫兹的贡献，人们把频率的单位命名为赫兹，简称“赫”。Cats use a causal-rational understanding of sounds or sounds to forecast the looks of invisible objects, lead researcher Saho Takagi claims
频率是单位时间内完成振动的次数，是描述振动物体往复运动频繁程度的量，为了纪念德国物理学家赫兹的贡献，人们把频率的单位命名为赫兹，简称“赫”。Cats use a causal-rational understanding of sounds or sounds to forecast the looks of invisible objects, lead researcher Saho Takagi claims