• 总之，中国古代四大发明，在人类科学和文化史 上留下了一个辉煌篇章。这些伟大的发明曾经影 响并有利于整个世界，推动了人类历史的前进。
• 东汉和帝元兴元年(公元105年)，蔡伦在总结前人制造丝 织晶的经验的基础上，发明了用树皮、破渔网、破布、麻 头等作为原料，制造成了适合书写的植物纤维纸，才使纸 成为人们普遍使用的书写材料。被称为“蔡侯纸”。
• 4. Typography • The typography is one of the most important four inventions in ancient China. • 4。印刷术
• 北宋刻字工人毕升在公元1004 年至1048年间，用质细且带有 粘性的胶泥，做成一个个四方 形的长柱体，在上面刻上反写 的单字，一个字一个印，放在 土窑里用火烧硬，形成活字。 这种改进之后的印刷术叫做活 活 板印刷术。 na ancient four inventions, has left behind a magnificent chapter in the history of human science and culture. These great inventions once influenced and benefited the whole world, had promoted the advancing of human history.
印刷术是最重要的中国古代四大发明之一
• The woodblock printing appear in Sui dynasty, it is that carve protruding Backward Chinese character on woodblock with knife, then brush Chinese ink-liquid, print on the paper.
China Ancient Four Inventions
中国四大发明
• Compass, gunpowder, papermaking skill and typography, is China ancient four inventions, it is one of the signs that China become to the ancient civilized country, occupy the important position in the history of human civilization.
• 1。指南针 指南针
指南针的发明是我国古 代劳动人民长期实践中认 识到物体的磁性的结果。
• Because of productive labor, people have found the characteristic of the magnet pointing to direction. Through experiment and research in many ways, invented the Compass at last.
• 3. Papermaking skill • The invention of papermaking skill is China’s contribution to the civilization of the world.
• 3。造纸术 。
• 造纸技术 造纸技术的发明，是 中华民族对世界文明 的杰出贡献之一。
• In the Eastern Han Dynasty (A.D. 105), the papermaking skill inventor Cai lun is on the basis of that forefathers weave silks experience, Have made into the vegetable fiber paper with bark, broken fishing network, rag, etc. raw materials. From then on, paper become to the material that generally write.
• 它开始于隋朝的雕版印刷， 是用刀在一块块木板上雕 刻成凸出来的反写字，然 后再上墨，印到纸上。
• In Sung Dynasty, word worker Bi Sheng (A.D. 1004 —— 1048), Use the clay with viscidity, make into the rectangle cube, carve the single Chinese characters on it, burn it with the fire, form the font. The printing skill is named the typography.
• 由于生产劳动,人们已经发现了磁铁的指出方向的 特点,。通过试验和在许多方面的研究,发明了指南 针。
• The Compass give play to important function in the navigation after introducing to Europe.
• 指南针 指南针在传入欧洲后， 在导航上发挥了重要 的作用
• 罗盘 火药、造纸术 印刷术 罗盘、火药 造纸术 印刷术,是 火药 造纸术和印刷术 中国古代四大发明, 这是中国 成为这古老文明的国家，占据在 人类文明史上占有重要地位的标 志之一。
• 1. Compass
• The invention of the compass is the result of China ancient working people know to the object magnetism in the long-term practice.
• 2. Gunpowder • The gunpowder is made of niter, sulfur and charcoal three kinds of materials mixing.
• 2。火药 火药 • 火药是由硝石、硫和木 火药 炭三种原料混合制成的。
• In the Tang Dynasty, the gunpowder begins to be applied to the military affairs. • People utilize the throwing stone machine, light the gunpowder bag and throw out, burn the enemy, this is the most primitive cannon. • 唐朝，火药 火药开始应用到军事上。 火药 • 人们利用抛射石头的抛石机，把火药 火药包点 火药 着以后，抛射出去，烧伤敌人，这是最原 始的火炮。