人类很早就盼望着能长期生活在美妙的太空上，幻想着能上天开发浩瀚的宇宙，我国嫦娥奔月的传说便是一例。经过祖祖辈辈的努力，这一异想天开的美梦终于在２０世纪变为了现实，它就是被誉为“人造天宫”的空间站。迄今，美苏（俄）已发射两代共９座空间站，其中现在轨运行... Mankind long ago looked forward to living in a wonderful space for a long time and imagined that it would develop the vast universe of God. The legend of Chang’e to the moon in our country is an example. Through the efforts of ancestors, this whimsical dream finally turned into reality in the 20th century. It is the space station hailed as the “Man-made Temple of Heaven.” To date, the United States, the Soviet Union (Russia) have launched two generations of nine space stations, of which the rail now operates ...