نبات كيميائى ، التخلص من مياه الصرف الصحي ، جسم الخزان ، صناعة ، مصنع ، صلب ، معدن ، أزرق ، صناعة البناء والتشييد ، الات ، تقنية
الصور ذات الصلة الخالية من حقوق الملكية
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