โคมไฟ, ลูกแพร์, แสง, เบา, หลอดไฟฟ้า, หลอดไฟ, พลังงาน, กระจก, การทดลอง, ไฟ, ส่องแสง
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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