首页英语词典echelonechelon英英释意

echelon

英 ['eʃəlɒn; 'eɪʃ-] 美['ɛʃəlɑn]
  • n. 梯形;梯次编队;梯阵;阶层
  • vi. 形成梯队
  • vt. 排成梯队

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