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炭:概述其特性和用途
tamzinknwe717374
4 days ago
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يُعرَّف 炭 بأنه مادة وخشبية ناتجة عن احتراق المواد العضوية في غياب الكمية الكافية من الأكسجين. يُستخدم الفحم الطبيعي
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