High-precision protective system escorts rail transportation
Visitors learn about the application of China’s BeiDou Navigation Satellite System (BDS) on transportation management during the second International Summit on BDS Applications in Zhuzhou, central China’s Hunan Province, Oct. 26, 2023. (Xinhua/Chen Sihan) CHANGSHA, Nov. 5 (Xinhua) — Smaller than an A4 piece of paper, with a weight of about five kilograms and the…