词又被称为什么

百度 尽管凡勃伦对于阶级分化、阶级掠夺以及阶级依附根源的分析，都与马克思主义经典作家有所差异，但这些研究对于补充和丰富马克思主义阶级理论具有借鉴价值。

(File photo)

China launched its first satellite Dong Fang Hong I (DFH I) to earth orbit on April 24, 1970, becoming the fifth country in the world to independently launch satellite following the USSR, USA, France and Japan. The 390-lb. electronic ball floated around the earth blaring the patriotic song The East Is Red.

The successful launch of DFH I laid solid foundation for the development of spaceflight technology in China, fueled the emergence of the country's spaceflight industry and enabled China's technology in this field to keep up with the world pace.

[ Editor: Zhang Zhou ]