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| English | Spanish |
| ballast lumen factor | factor de flujo del balasto |
| configuration factor between two surfaces S1 and S2 | factor de configuración |
| contrast rendering factor of a lighting system, for a task | factor de rendimiento en contraste |
| light loss factor | factor de depreciación |
| luminous flux maintenance factor | factor de mantenimiento del flujo luminoso |
| maintenance factor | factor de depreciación |
| reduced utilization factor of an installation, for a reference surface | factor de utilización reducido |
| reflectance factor optical density | densidad óptica del factor de reflectancia |
| sky component of daylight factor | componente celeste del factor de luz de día |
| suspension factor of an installation in an interior | factor de suspensión |
| total turbidity factor according to Linke | factor total de turbidez |