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أجهزة تنظيف الفحم (Info)
أجهزة تنظيف الفحم:- مجموعة من الاجهزة أو الآلات تستعملفي تنظيف الفحم ومثال ذلك استخدام الهزازات أو الوسط الثقيل ...الخ (معجم الجيولوجيا)
