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炭:概述其特性和用途
inesjqwc712531
55 minutes ago
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يُعرَّف 炭 بأنه مادة عضوية ناتجة عن احتراق المواد العضوية في غياب الأكسجين. يُستخدم الفحم الطبيعي على مدى الفترة
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