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炭:概述其特性和用途
saulsllz072143
3 days ago
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يُعرَّف 炭 بأنه مادة خشبية ناتجة عن احتراق المواد الخشبية في غياب الأكسجين. يُستخدم الفحم الطبيعي على مدى الفترة
https://reganlblb432671.law-wiki.com/user
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