คนงานก่อสร้าง, แผงวงจร, ขนาดเล็ก, ของเล่น, ตัวเลข, ตัวเลขพลาสติก, แผงวงจรพิมพ์, อิเล็กทรอนิกส์, พีซี, คอมพิวเตอร์
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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