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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 29910.2-2013 |
Industrial communication networks―Fieldbus specifications―Type 20 HART specification―Part 2: HART wired network data link layer service definition and protocol specification 工业通信网络 现场总线规范 类型20：HART规范 第2部分：HART有线网络数据链路层服务定义和协议规范 |
China National Standards specifications wired |
 English PDF |
| GB/T 29910.1-2013 |
Industrial communication networks―Fieldbus specifications―Type 20 HART specification―Part 1: HART wired network physical layer service definition and protocol specification 工业通信网络 现场总线规范 类型20：HART规范 第1部分：HART有线网络物理层服务定义和协议规范 |
China National Standards specifications wired |
English PDF |
| GB/T 19516-2004 |
The specifications of wired-emergency telephone system of expressway 高速公路有线紧急电话系统技术要求 |
China National Standards specifications wired |
English PDF |
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