
【国外标准】 Graphical symbols for telephony, telegraphy and radio communication.
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适用范围:
暂无
标准号:
BS 530:1934
标准名称:
Graphical symbols for telephony, telegraphy and radio communication.
英文名称:
Graphical symbols for telephony, telegraphy and radio communication.标准状态:
被代替-
发布日期:
1934-03-05 -
实施日期:
出版语种:
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