“频率”“分贝”是什么意思?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 04:52:57
![“频率”“分贝”是什么意思?](/uploads/image/z/8041663-55-3.jpg?t=%E2%80%9C%E9%A2%91%E7%8E%87%E2%80%9D%E2%80%9C%E5%88%86%E8%B4%9D%E2%80%9D%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%3F)
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