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炭:概述其特性和用途
alyshamlrx146528
4 days ago
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يُعرَّف 炭 بأنه مادة وخشبية ناتجة عن احتراق المواد الخشبية في غياب الأكسجين. يُستخدم الفحم الطبيعي على مدى السنوات لعدة
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