单词 | sellers screw thread |
释义 | Sellers screw threadnouna 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 for Sellers screw threadnamed after William Sellers (1824–1905), US engineer Words nearby Sellers screw threadsell down the river, seller, Sellers, sellers' market, seller's option, Sellers screw thread, Sellick's maneuver, sell in, selling, selling climax, selling floor Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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