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Date: 5-12-2018
1021
Date: 20-12-2018
877
Date: 14-10-2018
791
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Palladium is part of the the Platinum Group Metals (PGM) whic is located in the 5th and 6th rows of the transition metal section of the periodic table and includes Ruthenium, Rhodium, Palladium, Osmium, Iridium, and Platinum. Common characteristics include resistance to wear, oxidation, and corrosion, high melting points, and oxidation states of +2 to +4. They are generally non-toxic.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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جامعة كربلاء: مشاريع العتبة العباسية الزراعية أصبحت مشاريع يحتذى بها
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