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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 4728.10-2022 |
Graphical symbols for electrical diagrams - Part 10: Telecommunications: Transmission {译} 电气简图用图形符号 第10部分：电信：传输 |
China National Standards Telecommunications: |
 English PDF |
| GB/T 4728.9-2022 |
Graphical symbols for electrical diagrams - Part 9: Telecommunications: Switching and peripheral equipment {译} 电气简图用图形符号 第9部分：电信：交换和外围设备 |
China National Standards Telecommunications: |
English PDF |
| GB/T 4728.10-2008 |
Graphical symbols for diagrams - Part 10：Telecommunications:Transmission 电气简图用图形符号 第10部分：电信 传输 |
China National Standards Telecommunications: |
English PDF |
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