BS 3939:Guiding principles:1970被替代
Graphical symbols for electrical power, telecommunications and electronics diagrams. Guiding principles
出版：British Standards Institution
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基本信息
标准编号： BS 3939:Guiding principles:1970
发布时间：1970/2/15 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准备注
© British Standards Institution 2013
Replaces notes:
Replaces BS 108:1951, BS 530:1948 and Supplements 1-7 of BS 530.
Replaced by notes:
Replaced by Parts 1 to 13 of the new edition.
