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proportional
proportional
abbr.
ppn
;
propl
|
controller
controller
abbr. el.
cont
avia. Canada
A person holding a valid licence to control air traffic
mil. abbr.
con
;
ctlr
proportional
[prə'pɔ:ʃ(ə)nəl]
abbr.
abbr.
ppn
;
propl
abbr., oil
prop
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