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PV-diagrams and Expansion Work http://www.khanacademy.org/video/pv-diagrams-and-expansion-work --------------------------------------------------- يتناول هذا الفيديو كيفة تمثيل مخطط للحجم والضغط للغاز --------------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org