高清一级淫片a级中文字幕,亚洲无码免费在线小视频,精品国产群3p交换,国产初次视频观看

According to Fu Yong, head of China National Administration of GNSS and Applications, the BeiDou system has been working well since it was put into operation, and its civil user base now exceeds 10 million. In addition, BeiDou has finalized an inspection of 18,000 kilometers of gas pipe in Beijing, as Beijing Gas Group plans to replace its former GPS system with the BeiDou system.

Data shows that the overall function of the system meets design requirements. Key indices such as accuracy of positioning and timing services are better than design criteria demand.

The BeiDou system was independently established and is now independently operated by China. It provides positioning, navigation and timing services with high accuracy for users around the world. The first BeiDou satellite was launched in 2000 as a Chinese alternative to satellite navigation systems developed by other countries. In December 2012, it began providing positioning, navigation, timing and short message services to China and some parts of the Asia Pacific.