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| 单词 | british standard whitworth thread |
| 释义 | British Standard Whitworth thread in British Englishnoun Whitworth screw thread. Abbreviation: BSW Whitworth screw thread in British English (ˈwɪtwəθ) noun a thread form and system of standard sizes, proposed by Whitworth in 1841 and adopted as standard in the U.K., having a flank angle of 55° and a rounded top and foot Word origin named after Sir Joseph Whitworth (1803–87), English engineer |
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