国内精品一区二区三区最新_不卡一区二区在线_另类重口100页在线播放_精品中文字幕一区在线

The picture shows that two scientists in Beijing use a new and state-of-the-art technology to predict sandstorms and monitor the movement of such bad weather.

The new system, jointly developed by the Chinese Academy of Sciences, National Satellite Center and Peking University, stores and analyzes sandstorm data in the past 50 years.

In the past few years, sandstorms frequently hit northern China.

(China Daily March 17, 2004)