| 摘 要： | The development of China's space technology has been the focus of the world attention. Since the successful launch of DFH-1 artificial earth satellite on April 24, 1970, China has sent 33 indigenous satellites, including scientific experimental satellites, technical experimental satellites and meteorological satellites. All the experimental and operational satellites have played an important role in the construction of national economy and defense, and provided the advanced prapagation instruments for China's science, culture and education, and people both in cities and countries could watch TV andlisten to the radio and take part in telelecture. This has improved the cultural quality of the whole nation and accelerated the development of the four modernizations.
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