[1] Computer Reservation System - Sammelbegiff für computergestützte (vernetzte, z.T. internationale) Buchungssysteme

[2] Congressional Research Service - Library of Congress (->"IEEE Standard Dictionary")

[3] Containment Rupture Signal (->"IEEE Standard Dictionary")

[4] Cell Relay Service (ATM)

[5] Centralized Results System

[6] Carbondioxyde Reduction Subsystem (->"NASA Acronym List") {Weltraumfahrt}.