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１ 故障现象区间空闲时,区间监督红灯突然点亮,而后自动恢复;闭塞分区由无码到有码或由黄码转绿码过程中闪红灯。
1 fault phenomenon When the interval is idle, the interval supervision of a red light suddenly lit, and then automatically resume; blocking partition from no code to code or yellow code to green code flashing red.