bn:02474854n
Noun Concept
AR
الحالة الصلبة الإضاءة  والإضاءة الحالة الصلبة
EN
Solid-state lighting is a type of lighting that uses semiconductor light-emitting diodes, organic light-emitting diodes, or polymer light-emitting diodes as sources of illumination rather than electrical filaments, plasma, or gas. Wikipedia
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