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در کیبورد کامپیوتر، کلید کنترل که زیرکلید شیفت قرار دارد و با Ctrl مشخص میشود به تنهایی کاربردی ندارد و …
Within the testing community, NDE is not the only term used to describe the method in question. People have varied the terminology based on their specific application and information derived from the test. The terms are similar but with subtle …
برای همسن و سالهاي من (بچههای سي چهل سال پيش) آمدن بهار و نوروز لطف دیگری داشت! اینموقعهای سال که …
For the vast majority of human history, only a few metals, including iron, copper, tin, and lead, were in common uses. These metals of antiquity are those that are typically found in relatively high concentrations of one-half weight percent or …