echelon
'eʃәlɒn
基本解释
n. 梯形, 梯阵, 梯次编队
vt. 排成梯队
vi. 形成梯队
英文释义
n. a body of troops arranged in a line
n. a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
词形变化
上一个单词：echelogram
下一个单词：echelon grating