21-01-29 1月27日，国家主席习近平以视频连线方式听取了香港特别行政区行政长官林郑月娥2020年度的述职报告。习近平强调，只有做到爱国者治港，香港才能实现长治久安。 President Xi Jinping said on Jan 27 that Hong Kong can only maintain its long-term stability and secu...

13-08-21 One of the lesser known concerns about commercial aircraft is their stability on the ground during taxiing（滑行） , takeoff, and landing. During these processes, planes must maintain stability under various operating conditions. However, in some si...

10-02-12 Besides the 92 elements that occur naturally, scientists were able to create 20 additional chemical elements, six of which were discovered at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt. These new elements were produced artificially...