英语词汇“sellers screw thread”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	sellers screw thread
释义	Sellers screw thread in British English noun a thread form in a system of standard sizes proposed by Sellers in 1884 and later accepted as standard in the USA, having a 60° flank angle with a flat top and foot Word origin named after William Sellers (1824–1905), US engineer
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Sellers screw thread in British English