Archive:Rail signals (research)/zh: Difference between revisions
		
		
		
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{{Languages}}{{:Infobox:Rail signals (research)}}  | {{archive}}{{Languages}}{{:Infobox:Rail signals (research)}}  | ||
允许在同一条{{L|Railway}}上组织多列火车通过。  | 允许在同一条{{L|Railway}}上组织多列火车通过。  | ||