英语词汇“center pin”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	center pin
释义	WordReference Random House Unabridged Dictionary of American English © 2024 cen′ter pin′, [Railroads.] Rail Transporta cylindrical device passing through the center plates of both the body bolster and the truck bolster, permitting the truck to swivel beneath the car body while the stress is taken by the center plate. 1795–1805
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