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Definition: Casgliad o domenni glo lle bydd perfformiad amgylcheddol neu beirianegol un tomen yn gysylltiedig neu'n ddibynnol ar berfformiad tomenni gyfagos, sy'n arwain at ryngddibyniaethau.
Notes: Elfen o gyfundrefn arfaethedig ar gyfer rheoli tomenni glo.
