خواندن بعدی
Before the spread of the Internet, everyone dealt with letters and stamps. One of the pastimes of that time was to separate the stamp from the envelope and keep it. I also had a stamp album when I was a …
Below table lists the crystal structures of the pure metals at room temperature. In nearly every case the metal atoms pack into the simple crystal structures of face-centered cubic (FCC), body-centered cubic (BCC) or close-packed hexagonal (CPH or HCP) Some …
یکم خرداد ماه روز ملی معدن است. به همین مناسبت در فایل زیر کوشش شده تا یادی شود از هممیهنان …
Stainless steels owe their widespread use to a combination of unique properties that have advantages over those of other steels and nonferrous metals for many applications. The principal outstanding characteristics are their resistance to corrosion in many environments, their good …
