n. 1.【军事】梯队,梯阵;梯列。 2.组织系统中的等级,指挥阶层;(负有特殊责任而占据同一等级的)集团。 3.特勤部队。 4.【物理学】阶层光栅。
短语和例子
fly in echelon 梯队飞行。 a rear echelon 后方梯队。 in a higher echelon 在高级指挥阶层。 a maintain echelon 后勤保养队。 vt. 使成梯队。 an army echeloned along the road 沿公路排成梯队的大军。 vi. 排成梯队。
a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant offset
a body of troops arranged in a line
百科解释
ECHELON is a name used in global media and in popular culture to describe a signals intelligence (SIGINT) collection and analysis network operated on behalf of the five signatory states to the UKUSA Security Agreement