Service Speed of Table Tennis in Tianjin Senior High School Entrance Examination

4 to 7 meters per second. Official website of Tianjin Senior High School Entrance Examination Network shows that the speed of the table tennis server in Tianjin Senior High School Entrance Examination is 4 to 7 meters per second. Tianjin is a municipality directly under the central government of China, located in the north of China, and is the largest port city and one of the important economic centers in the north of China. The history of Tianjin can be traced back to 473 BC, and it is one of the important cities in the history of China. Tianjin is a vibrant city with rich historical and cultural heritage and modern urban landscape.