单词
echelon
英 ['eʃəlɒn; 'eɪʃ-] 美['ɛʃəlɑn]
基本信息
英英释义 实用场景例句
  • n. 梯形；梯次编队；梯阵；阶层
  • vi. 形成梯队
  • vt. 排成梯队
畅通词汇低频词

英英释意

1. a body of troops arranged in a line
2. a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
echelon相关单词
echelon
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