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炭:概述其特性和用途
mayasdcg328510
1 hour 59 minutes ago
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يُعرَّف 炭 بأنه مادة عضوية ناتجة عن احتراق المواد الطبيعية في غياب الأكسجين. يُستخدم الفحم الطبيعي على مدى الفترة
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