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QEC abbr.
abbr.	Quality Education Coalition; Quality Engineering Company; Quality Environmental Education; Quantum Engineering Corporation; Quebec Elite Circle; Quiesce at End of Chain (Vosoni)
abbr., avia.	Quick Engine Change Equipment (Zealot2002); quadrantal error corrector; quick engine charge
abbr., earth.sc.	quasi-estuarine circulation
abbr., el.	quiesce-at-end-of-chain (indicator)
abbr., mil.	Quick Engine Change
abbr., scottish	Quadrantal Error Correction
abbr., tradem.	Quicksilver Express Courier
energ.ind.	quantification of environmental contamination
mil.	quick engine change
tech.	quantum electronics council
transp.	May I make a 180-degree turn and return down the runway?