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dislocations are like humans- Rev 0
When comparing steel standards from different national and international standard development organizations, there is no such thing as equivalent steel standards. At best, one may be able to group comparable steel standards together based on some defined set of rules. …
Definitions of corrosion include: − NACE/ASTM G193: ‘Corrosion is the deterioration of a material, usually a metal, that results from a chemical or electrochemical reaction with its environment.’ − ISO 8044: ‘Physicochemical interaction (often of an electrochemical nature) between a …
اگر به موسیقی ایرانی علاقه دارید شاید دوست داشته باشید بدانید که قدیمیترین تصنیف کدام است. شعر قدیمیترین تصنیف ایرانی …
