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一、中国古代的科学技术和科学家中国古代的科学技术成果辉煌,长期处于世界前列,具有明显的先进性。1.四大发明。(1)造纸术:中国早在西汉时期已经会制造麻纸。东汉时,蔡伦改进造纸术,制成植物纤维纸,他的主要贡献是使造纸的原料多样化,造纸成本大大降低。(2)印刷术:隋唐时期,我
I. Ancient Chinese science and technology and scientists The brilliant achievements of ancient Chinese science and technology have long been in the forefront of the world and have obvious advancement. 1. Four inventions. (1) Papermaking: China already produced hemp papers as early as the Western Han Dynasty. In the Eastern Han Dynasty, Cai Lun improved papermaking and made vegetable fiber paper. His main contribution was to diversify the raw materials for papermaking and the cost of papermaking was greatly reduced. (2) Printing: During the Sui and Tang Dynasties, I