BEIJING, June 24 (Xinhua) -- The following is a summary of published science and technology news of China.

LAUNCH OF BEIDOU

China launched the last satellite of the BeiDou Navigation Satellite System on Tuesday, marking the completion of the deployment of its own global navigation system.

The satellite, the 55th in the family of BeiDou that means "Big Dipper" in Chinese, was launched at 9:43 a.m. (Beijing Time) and sent into the preset orbit by a Long March-3B carrier rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province.

RAILWAY SOUND-ABSORBING TUNNEL

An 847-meter-long, sound-absorbing tunnel on the high-speed railway linking Beijing and the Xiong'an New Area in north China's Hebei Province, has been completed. This will help avoid the noise emanating from trains and tracks, engineers with China Railway Group Limited said.

With increasing additions of transportation hubs and railway lines across the country, train noise mitigation is of concern to people, and the newly-built tunnel seems one of the best solutions. According to its developers, the tunnel is equivalent to a sound barrier, and can minimize the noise generated by bullet trains traveling at a speed of 350 kph. Enditem

Related

Go to Forum >>0 Comment(s)