
【国外标准】 The normal threshold of hearing for pure tones by earphone listening
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适用范围:
暂无
标准号:
BS 2497:1954
标准名称:
The normal threshold of hearing for pure tones by earphone listening
英文名称:
The normal threshold of hearing for pure tones by earphone listening标准状态:
被代替-
发布日期:
1954-07-30 -
实施日期:
出版语种:
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