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PRR D7
Class D7 (formerly Class A (anthracite), pre-1895) on the Pennsylvania Railroad was a class of 4-4-0 steam locomotive. Fifty-eight were built by the PRR's Altoona Works between 1882–1891 with drivers, while sixty-one of class D7a were constructed with drivers.〔(【引用サイトリンク】url = http://www.northeast.railfan.net/prr_steam2.html )〕 The D7 was fundamentally an anthracite-burning version of the PRR D6, with a larger fire-grate in order to burn the slower-burning, harder coal. ==References== 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「PRR D7」の詳細全文を読む
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