60117-13 SUPP A-1971 First supplement to Publication 60117-13 {1969} Recommended graphical symbols Part 13: Block symbols for transmission and miscellaneous applications (Edition 1.0)
Premier complement a la Publication 60117-13 {1969} Symboles graphiques recommandes 13eme partie: symboles fonctionnels pour transmission et applications diverses (Edition 1.0)
First supplement to Publication 60117-13 {1969} Recommended graphical symbols Part 13: Block symbols for transmission and miscellaneous applications (Edition 1.0) 是非强制性国家标准,您可以免费下载前三页