| Subject | English | Chinese |
| libr. | Open Archives Initiative Protocol for Metadata Harvesting | 开放文档元数据互操作协议 |
| el. | open communication protocol | 开放通信协议 |
| comp., net. | open communication protocol | 开放式通信协议 |
| comp., net. | open core protocol | 开放式核协议 |
| refrig. | open data communication protocol | 开放式数据通讯协议 |
| comp., net. | open line protocol | 开放式链接协议 |
| el. | open management protocol | 开放式管理协议 |
| avia. | open management protocol | 开放的管理协议 |
| comp., net. | open protocol | 开放式协议 |
| el. | open protocol technology | 开放协议技术 |
| comp., net. | open protocol technology | 开放式协议技术 |
| el. | open settlement protocol | 开放式结算协议 |
| avia. | open settlement protocol | 开放结算协议 |
| IT | open shortest path first interior gateway protocol | 开放最短路径优先 OSPF 内部网关协议 |
| comp., net. | open shortest path first interior gateway protocol | 开放最短路径优先内部网关协议 |
| el. | open shortest path first protocol version 2 | 开放式最短路径优先协议第二版本 |
| el.com. | open trade protocol | 开放贸易协定 |
| el. | open trading protocol | 开放贸易协定 |
| IT | open trading protocol | 开放交易协议 |
| multimed. | open trading protocol | 开放贸易协议 |
| el. | radio open system interworking protocol | 无线开放系统互通协议 |
| el. | X/Open management protocol | X/Open 管理协议 |
