英语词汇“ruling grade”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ruling grade
释义	WordReference Random House Unabridged Dictionary of American English © 2024 rul′ing grade′, [Railroads.] Rail Transportthe steepest grade on a given stretch of track, which determines the maximum tonnage that can be hauled in a train having a given horsepower at a stated minimum speed.
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