Jisho

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Noun
1. diagram
Wikipedia definition
2. Service planning (train)A service planning diagram is a document designed for railroad traffic safety and control. In railroad history, it quickly made sense to pipe trains one after the other to the same place, first in large passenger stations, then on links between big railroad hubs. The control was done by the train dispatcher: diagrams were usually drawn once a day, and corrected in real time as the day went by. The diagram is an overlapping of working timetables.
Read “Service planning (train)” on English Wikipedia
Read “ダイヤグラム” on Japanese Wikipedia
Read “Service planning (train)” on DBpedia
Other forms
ダイヤグラム

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