北京时间11月3日15时20分,酒泉卫星发射中心用“长征”二号丁运载火箭,成功地发射一颗返回式科学与技术试验卫星。这是我国在不到20天的时间里,连续进行的第三次航天发射。这颗我国自行研制的返回式科学与技术试验卫星,与以往的返回式卫星相比,其整体性能有较大改进和提高。卫 Beijing time at 15:20 on November 3, Jiuquan Satellite Launch Center, “Long March” II Ding carrier rocket successfully launched a return of science and technology pilot satellite. This is the third space launch that has been carried out continuously by our country in less than 20 days. This self-developed return-type scientific and technological experimental satellite developed by our country has greatly improved and improved its overall performance compared with the previous return-type satellite. guard