| 单词 | echelon |
| 释义 | Word Frequency echelon(ˈɛʃəˌlɒn) noun 1. a level of command, responsibility, etc (esp in the phrase the upper echelons) 2. military a. a formation in which units follow one another but are offset sufficiently to allow each unit a line of fire ahead b. a group formed in this way 3. physics a type of diffraction grating used in spectroscopy consisting of a series of plates of equal thickness arranged stepwise with a constant offset verb 4. to assemble in echelon Word origin C18: from French échelon, literally: rung of a ladder, from Old French eschiele ladder, from Latin scāla; see scale3 |
| 随便看 |
英语词典包含233703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。