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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 4728.2-2018 |
Graphical symbols for electrical diagrams—Part 2：Symbol elements,qualifying symbols and other symbols having general application 电气简图用图形符号 第2部分: 符号要素、限定符号和其他常用符号 |
China National Standards elements,qualifying |
 English PDF |
| GB/T 4728.2-2005 |
Graphical symbols for diagrams Part 2 Symbol elements,qualifying symbols and other symbols having general application 电气简图用图形符号 第2部分:符号要素、限定符号和其他常用符号 |
China National Standards elements,qualifying |
English PDF |
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