خواندن بعدی
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 …
We live in the information age where essentially instantaneous communications e.g. email and text messaging, are a way of life. In business, the ever-present email has to some extent, replaced the formal memorandum as the main medium for transferring information. …
The white book of steel is an informative and entertaining look at steel’s enormous impact on the history of mankind, and the role that it is set to play in helping to shape the future of humanity. Tracing steel’s development from …
