BEIJING, Jan. 5 (Xinhua) -- Chinese researchers have recently unveiled dynamic changes that occur in both the human immune system and metabolism during high-altitude climbing, offering a fresh ...
BEIJING, Dec. 30 (Xinhua) -- China's number of registered civil unmanned aerial vehicles (UAVs) has exceeded 1.7 million, the Low-Altitude Industry Alliance (LAIA) said at its annual work conference ...