China's first railway experts in the field measurement of length 9.3 km

China news agency, Tangshan, October 15 (Bai Yunshui and Hu Xiangming) - First railway in China, "Tang Xu Railway" on the eve of the anniversary of the line 130, five in the history of China's coal research scholars, 15, walking along the Tang Xu railway field measurements, ultimately determine the actual length of 9.3 km. Tangshan is known as "China's modern ...China's first railway experts in the field measurement of length 9.3 km