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火药、造纸、指南针、活版印刷术。中国古代的四大发明,在世界科技发展的长河中.曾经为推动人类文明的进步作出过不可磨灭的贡献.为世界所瞩目。而今天.中国在世界科技发展的史册上.正用自己独特的智慧创造并继续书写着光辉的篇章。仅以近几年为例,中国的科技创新成果就层出不穷。2000年.我国自主开发的PB-SCDMA系统,和美欧并称为第三代移动通讯人的三个国际
Gunpowder, paper, compass, and typography. The four major inventions of ancient China, in the long river of scientific and technological development in the world, have made indelible contributions to the advancement of human civilization and have attracted the attention of the world. Today, China is in the history of the development of science and technology in the world. It is using its own unique wisdom to create and continue to write a glorious chapter. Only in recent years, for example, China’s scientific and technological innovations have emerged in an endless stream. In 2000, China’s self-developed PB-SCDMA system, and the United States and Europe are also known as the 3rd generation of third-generation mobile correspondents.