| 单词 | plumb rule |
| 释义 | plumb rule (once / 1688473 pages) n WORD FAMILY plumb rule n a plumb line attached to a narrow board Hyper perpendicular, plumb line a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point |
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英语词典包含147318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。