echelons

n.

（机构中的）等级，阶层( echelon的名词复数 )；（军舰、士兵、飞机等的）梯形编队；

in echelon排成梯队的(地)；梯次配置的(地)

en echelon雁列式的；梯形

Upper echelons research and managerial cognition
The bullwhip effect in intra‐organisational echelons
Upper Echelons Research Revisited: Antecedents, Elements, and Consequences of Top Management Team Composition
Echelons of care and the management of wartime vascular injury: a report from the 332nd EMDG/Air Force Theater Hospital, Balad Air B...
Integrated design of supply chain networks with three echelons, multiple commodities and technology selection
Detection and delineation of critical areas using echelons and spatial scan statistics with synoptic cellular data
Revision des Eumastacoidea (Orthoptera) aux echelons des familles et des sous-familles (genitalia, repartition, phylogenie)
Networks of queues with infinite servers in each node applied to the management of a two echelons repair system
Single-shot terahertz pulse characterization via two-dimensional electro-optic imaging with dual echelons.
The Use of Multiple Informants in Public Administration Research: Data Aggregation Using Organizational Echelons