网站首页 汉语 德语 英语
Either of the two parts of a hollow, internally threaded tool used to cut a screw thread; (in later use) a similar tool made in a single piece.
Mid 19th century; earliest use found in The London Journal of Arts and Science.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。