حجر سحق خطوات النظام العادي
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تحتوي الصخور على مجموعة متنوعة من المعادن، هذه المعادن هي أحد المكونات الرئيسية للصخور؛ كما أن المعادن توجد بمجموعة كبيرة ومتنوعة؛ تصنف وفقًا لخصائصها الفيزيائية؛ كاللون، والصلابة ...
Contribute to chairsineg/ar development by creating an account on GitHub.
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Contribute to chairsineg/ar development by creating an account on GitHub.
