دائرة ، خواتم ، الويب ، نبذة مختصرة ، موجات الدوائر ، شكل ، بناء ، استهداف ، تكرار ، مركز
Public Domain
علامات الصورة:
الصور ذات الصلة الخالية من حقوق الملكية
- Public Domain
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