?分度环
... 分度虎钳 index center; 分度环 graduated collar; scale ring; 分度机 dividing engine; ...
复刀架丝杠刻度圈
千分尺环
Fuentes noticed there were dozens of services to help people who graduated from the top 50 colleges and universities to find work, but nothing for blue-collar workers.
FORBES: WorkersNow: The Blue Collar Set's LinkedIn
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。