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 …
In the drawing of an equipment, 304/304L was considered as material. During construction, the inspector noticed that only 304 was used. When he asked why, he heard: “I didn’t do anything wrong. As you see in the drawing, 304/304L is …
Last week, I upload here a file called ASTM Terminology Standards. After that, Mohammad Fouladi suggested to prepare a file …
