echelon

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n. 梯形, 梯阵, 梯次编队 vt. 排成梯队 vi. 形成梯队

发音

UK /ˈɛʃ.ə.lɒn/
AU /ˈeɪ-/
US /ˈɛʃ.əˌlɑn/

词形变化

echelons 复数 echelons echeloned echeloning echelons 三单 echeloning 现在分词 echeloned 过去式 echeloned 过去分词

别名

échelon

释义与例句

n.
  1. 1.

    A level or rank in an organization, profession, or society.

  2. 2.

    A line of riders seeking maximum drafting in a crosswind, resulting in a diagonal line across the road.

    体育
  3. 3.

    A formation of troops, ships, aircraft, etc., in diagonal parallel rows.

    政治 军事
v.
  1. 1.

    To form troops into an echelon.

    及物 政治 军事
adj.
  1. 1.

    Of a matrix: having undergone Gaussian elimination with the result that the leading coefficient or pivot (that is, the first nonzero number from the left) of a nonzero row is to the right of the pivot of the row above it, giving rise to a stepped appearance in the matrix.

    数学

词汇关系

名词

上位词 5

force position status grating diffraction grating

相关短语

echelon lens echelon lenses echelon parking echelon form echelon forms row echelon form reduced row echelon form column echelon form row echelon forms reduced row echelon forms column echelon forms rear echelon 后方梯队 en echelon

词源

Borrowed from French échelon (“rung; echelon”), from échelle (“ladder”) + -on (diminutive suffix). Échelle is derived from Latin scāla (“ladder”), from scandō (“to ascend, climb”), from Proto-Indo-European *skend- (“to jump”).

来源：wiktionary