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File:Milan-Metro-Line1-4rail-track.jpg

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English: A view looking into the tunnel showing the four rail nature of the electrification of Milan's metro line 1 (top contact negative between the tracks and side contact positive to the side of the tracks).
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Author Spsmiler
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Date/TimeThumbnailDimensionsUserComment
current10:39, 14 January 2010Thumbnail for version as of 10:39, 14 January 20103,072 × 2,304 (1.53 MB)Spsmiler{{Information |Description={{en|1=A view looking into the tunnel showing the four rail nature of the electrification of Milan's metro line 1 (top contact negative between the tracks and side contact positive to the side of the tracks).}} |Source={{own}} |

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Quelle: https://en.wikipedia.org/wiki/File:Milan-Metro-Line1-4rail-track.jpg