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CCOS
abbr.
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stresses
abbr.
Clearing Corporation for Options and Services
;
Consultative Committee on Outage Statistics
abbr., avia.
computer controlled operating system
abbr., cryo.
China Climate Observing System
abbr., earth.sc.
communication computer operations system
abbr., el.
chip card operation system
;
communications computer operating system
;
computer-controlled optical surfacing
abbr., oil
Chinese character operating system
;
communication computer operating system
;
computer-controlled operating system
abbr., space
computer-controlled operation system
tech.
current communications
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