单词 | acme thread |
释义 | acme threadMechanics noun A type of screw thread having flat apexes and valleys (as in a square thread), but with the sides of the threads inclined at an angle of 29 degrees. OriginEarly 20th century. |
随便看 |
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。