...GCR...
I, too, had to look up GCR. Please, could we always give the definitions of the less-common abbreviations we use – at least for the first time in a thread or perhaps after a long gap? Not doing so has often been criticised by opponents of forums like ours as elitist, thoughtless and pompous.
GCR =
Galactic Cosmic Ray/Radiation
Galactic Cosmic Rays
Gas Cost Rate
Gas Cost Recovery
Gas-Cooled Reactor
Gateway for Cancer Research (Illinois)
General Cargo Rates (shipping)
General College Requirements (various locations)
General Competition Rules
General Conformity Rule
General Counsel Roundtable (Corporate Executive Board)
Generalized Cambridge Ring (semiconductors)
Generalized Conjugate Residual
Geological Characterization Report
Geological Conservation Review (UK)
Geometric Constraints and Reasoning (various schools)
Gérald Construction Rénovation (French: Gerald Building Construction)
Gestion Comptabilité Révision (French: Accounting Management Review)
Ghost Cancelling Reference
Gibbons Creek Reservoir (College Station, TX)
Global Call Register
Global Competition Review (website)
Global Competitiveness Report
Global Confidence Region
Global Corruption Report
Global Currency Reset
Glucocorticoid Receptor (molecular biology)
Godvicienne Carreleurs Réunis (French flooring company)
Good Charamel Records (record label)
Good Conduct Ribbon (military award)
Graduate Common Room (Christ Church; UK)
Graduate Council Representative (various schools)
Grand Calumet River
Grand Canyon Railway
Grand Circuit du Roussillon (French: Grand Tour of Roussillon; Roussillon, France)
Gravity Condensate Return
Gray Component Replacement (printing inks)
Great Canadian Rebates (Canada)
Great Central Railway (UK)
Greater China Region
Greedy Column Re-Routing
Gregory C. Rigamer & Associates, Inc (New Orleans, LA)
Gripo Colaboradores de Revisión (Spanish)
Ground Controlled Radar
Ground Cover Ratio (photovoltaic system)
Group Call Register
Group Code Recording
Group Coded Recording
Groupement des Concessionnaires Renault (French: Renault Dealers Grouping)
Gruson Construction Rénovation (French: Gruson Building Construction)
Guaranteed Capacity Rate (air cargo industry)
Guitar Center Radio
Gulf Coast Region
Gulf Coast Repository