2. "UT" is the initials of "University of Technology" in the English of University of Technology, and the full name of Dalian University of Technology is "Dalian University of Technology".

3. "edu" stands for educational institution. In China, such domain names are only open to educational institutions, and most of them are used by universities.

4.".cn ",Internet domain name, national top-level domain name, representing the national domain name of China.