GB 50311-2016 第4.3.2条
| **** | Horizontal subsystem: Each information point should be provided with an independent horizontal cable, the length of which should not exceed 90 m, and a star topology should be adopted. |
| **** | Horizontal subsystem: Each information point should be provided with an independent horizontal cable, the length of which should not exceed 90 m, and a star topology should be adopted. |
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