
【国外标准】 Polarized & non-polarized plugs for use on hearing aids.
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适用范围:
暂无
标准号:
BS 2813:1957
标准名称:
Polarized & non-polarized plugs for use on hearing aids.
英文名称:
Polarized & non-polarized plugs for use on hearing aids.标准状态:
被代替-
发布日期:
1957-01-17 -
实施日期:
出版语种:
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