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| Chinese | English |
| 中立〔中间〕地带 | differential gap |
| 地区中心局 | local central office |
| 本地信令中转点 | local local signaling transfer points STP |
| 本地信令中转点 | local signaling transfer points |
| 端 口地址和中断设置 | port address and interrupt settings |
| 道路的中心岛地带 | neutral zone |
| 集中接地装置 | concentrated grounding connection |