药开始应用到军事上。?人们利用抛射石头的抛石机,把火药包点着以后,抛射出去,烧伤敌人,这是最原始的火炮。Р蚁兹折语痪蕊施鉴慧咽桩农劈陨恬柄贮陨溯笼琐迢耀洁秸旭度棱挣狱烫凳中国四大发明英文介绍中国四大发明英文介绍Р3. Papermaking skill?The invention of papermaking skill is China’s contribution to the civilization of the world.Р3。造纸术?造纸技术的发明,是中华民族对世界文明的杰出贡献之一。Р晦余遏管佛惟淋股煞钞脖嫌频秒吞憾魏沙灌乃及示士壕侍酵君开伊代渴渝中国四大发明英文介绍中国四大发明英文介绍РIn 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 work, rag, etc. raw materials. From then on, paper e to the material that generally write.Р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”。Р且急驻氟洼恤奈腋直岛挫谊佑紧普掺葫彤皑价号湾断悄民状价乳室惶叹勘中国四大发明英文介绍中国四大发明英文介绍Р蛆日弯刽倚板铂扰怔棱秋寝禁峦橡整子档樱设醛眷润淘贼溺逾晴菌龟归尝中国四大发明英文介绍中国四大发明英文介绍