作业帮中国四大发明及发明人但不仅要有中文还有英文
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中国四大发明及发明人但不仅要有中文还有英文
中国四大发明及发明人但不仅要有中文还有英文
中国四大发明及发明人但不仅要有中文还有英文
毕升 活字印刷 中国约在公元7世纪的初唐时期就已出现采用雕版印刷术印制的书 .唐咸通九年（868）印制的《金刚经》 ,是世界上现存最早的有刻印时间的印刷品.宋仁宗庆历年间,平民毕升在雕版印刷业已普及的基础上,发明了活字印刷术.
蔡伦 造纸术 东汉元兴元年（105）
火药是中国古代炼丹家在炼丹过程中发明的,具体的没有,火药三国时代开始发明,当时被用来当爆竹,到了宋代才被用来当作军事用.
指南针也没有具体的发明者 中国先民已用天然磁石制成指示方向的司南之勺.三国魏时,马钧利用磁铁和差速齿轮制造了能指示方向的机械装置——指南车.宋代科学家沈括在其《梦溪笔谈》中记载了制作指向用的磁针的方法.后来,又发展成磁针和方位盘联成一体的罗盘.
Bi Sheng Printing China around seventh Century in the early period of the Tang Dynasty have been using woodblock printing printed book.Tang Xiantong nine years ( 868) printed the" Diamond Sutra",is the world's earliest extant is marking time print.The song through the years,civilian Bi Sheng in woodblock printing has popularization in the foundation,invention of movable-type printing.
Cai Lun papermaking Han Xing Yuan first year ( 105)
Gunpowder is the Chinese ancient alchemy home in their process of the invention,not specific,powder three times began to invent,was used when the fireworks,the song was used as a military.
The compass is also no specific inventor of Chinese ancestors have used lodestones made indicating the direction of the Sinan spoon.The Three Kingdoms of Wei,Ma Jun uses a magnet and a differential gear made the direction indication mechanism -- Guide vehicle.The Song Dynasty scientist Shen Kuo in his" dream stream essays" recorded in the production with the needle point method.Later,it developed into the needle and the bearing plate into one compass.