英语词汇“flat-bottomed rail”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	flat-bottomed rail
释义	flat-bottomed rail flat-bottomed rail n (Railways) railways a rail having a cross section like an inverted T, with the top extremity enlarged slightly to form the head. Also called: flanged rail
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