الفيزياء (فصول) للثانوي العام الفصل الرابع فيزياء درجات الحرارة المنخفضة
انظر عرض آخر بالرابط 🔘
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انظر عرض آخر بالرابط 🔘
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![](https://image.slidesharecdn.com/random-161015191951/95/-86-1024.jpg?cb=1476559224)
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![](https://image.slidesharecdn.com/random-161015191951/95/-90-1024.jpg?cb=1476559224)
![](https://image.slidesharecdn.com/random-161015191951/95/-91-1024.jpg?cb=1476559224)
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