ring system

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ring system [′riŋ ‚sis·təm]

(organic chemistry)

Arbitrary designation of certain compounds as closed, circular structures, as in the six-carbon benzene ring; common rings have four, five, and six members, either carbon or some combination of carbon, nitrogen, oxygen, sulfur, or other elements.

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No references found			63 QD401 Each volume in this series deals with the synthesis, reactions, properties, structure, physical chemistry, and utility of compounds belonging to a specific ring system or class. The naphthyridines by SciTech Book News The Science Museum attraction will showcase projects as diverse as a study of Saturn's ring system to a probe which has collected a sample of solar wind. Space display totellof solar system by Coventry Evening Telegraph (England) Separate sections also include oil sealed systems, environmental remediation systems, booster/liquid ring systems as well as central vacuum systems and compressors. Liquid ring pumps. (Supplier's Corner) by Nonwovens Industry			ring louver ring main ring micrometer ring modulator Ring Nebula ring network Ring of Fire ring of operators Ring of the Nibelungs ring permutation ring plain ring power transmission line ring road ring rot ring scratch awl ring shake ring shift ring sight ring silicate ring spinner ring spot ring stone ring stress ring structure ring syncline ring system ring test ring theory ring time ring topology ring vessel ring vortex ring whizzer Ring, Algebraic Ring, Magic ring-and-ball test ring-and-bead sight ring-and-circle shear ring-around ring-dyed fiber ring-fracture intrusion ring-fracture stoping ring-groove nail ring-lifter case ring-oil ring-porous wood ring-roller mill ring-rolling ring-shank nail Ring-Tailed Lemur Ring-Tailed Opossums			ring scotoma ring scratch awl Ring seal Ring seal Ring Segment System Ring Shadow ring shake ring shake ring shift ring sight ring sign Ring silicate ring snake Ring spanner Ring spanner Ring spanner Ring spinner Ring spinner Ring Sport Club Inzing ring spot Ring stain ring stone Ring Stone Wash Light Ring stopper ring stress Ring structure Ring structure Ring Subnetwork Controller ring syncline ring syringe ring system Ring tailed lemur Ring tailed lemur ring taw Ring Technischer Verbindungen Mitteldeutschlands ring test ring test ring test ring test ring test Ring the Bell ring the changes ring the curtain down ring the curtain up Ring theory ring thrush ring time Ring Tip Sleeve Ring to Rule Them All Ring tone Ring tone Ring Tone No Answer Ring Tone No Response Ring Tone Transfer Language Ring tones Ring tones ring topology ring topology Ring Trading ring true Ring Type Current Transformer

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