ICONTEC 1992-1984 《声音类，相关等级，声音的相关物理属性》.pdf

相关资源

MSZ 11459 16-1980 《电视保护设备检测 声音通道声和电力的特点》.pdf

MSZ 11459 15-1980 《电视保护设备检测声音通道的规定一般标准》.pdf

八年级物理上册1.5《声音的产生和传播》预习检测北京课改版.doc

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E 315-1977 《声音类 声音频率的测量》.pdf

八年级物理上册2.3《我们怎样区分声音（续）》随堂检测（新版）粤教沪版.doc

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