echeloningechelonment梯次: echelon配置: dispose; deploy; allocation; ...梯次配置队形: echelon formation纵深梯次配置: echelonment in depth梯次配置的中队: squadron in echelon下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:梯次配置，即可在微信中查询翻译
