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炭:概述其特性和用途
shaunadeqx822977
3 days ago
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يُعرَّف 炭 بأنه مادة عضوية ناتجة عن احتراق المواد العضوية في غياب الكمية الكافية من الأكسجين. يُستخدم الفحم الطبيعي على
https://bushradqek627843.birderswiki.com/user
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