<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          US EUROPE AFRICA ASIA 中文
          Culture

          85 ground-breaking innovations of ancient China

          ( Chinaculture.org ) Updated: 2015-02-02 14:08:06

          85 ground-breaking innovations of ancient China

          Photo shows the bronze chariots and horses from Qin's Mausoleum of Qin Dynasty (221-206 BC). [File photo]

          The 85 items of important scientific and technological inventions of ancient China were recently announced by the Institute for the History of Natural Science, Chinese Academy of Science.

          The project was launched by the institute in August of 2013, and the process of appraisal and selection took one and a half year.

          Based on extensive research and investigation, the institute chose 85 items of important scientific and technological inventions of ancient China, which falls into three categories: scientific discoveries and creations, technological inventions, and engineering achievements.

          For example, the theory of channels and collaterals (Chinese: 經脈學說) of the Han Dynasty (206 BC - AD 220) is listed in the catalogue of scientific discoveries and creations; the four ancient Chinese inventions — papermaking, printing, the compass and gunpowder, and the Seismoscope invented by the Chinese scientist Zhang Heng of Han Dynasty in the catalogue of technological inventions; bronze chariots and horses from Qin's Mausoleum of Qin Dynasty (221-206 BC), Chime of Zenghouyi and Dujiangyan Irrigation System in the period of Warring States Period (475-221 BC) in the catalogue of engering achievements.

          "Of course, the inventions of Chinese people are not limited to these 85 items. In the course of selection, we emphasis on their originality and their influences on science and technology advancement, as well as their impact on the civilization's progress," said Zhang Baichun, a research fellow of the institute.

          According to the research panel, the period for ancient scientific and technological creation is not equally distributed in Chinese history. The flourishing Tang Dynasty (AD 618-907) did not excel in those innovations, but instead many great inventions emerged in the declining Song Dynasty (960-1279).

          "After the collapse of the Yuan dynasty, not many great inventions appeared in the more than 500 years of Ming and Qing dynasties. Such results are worthy of serious consideration and also an important research subject for us in the future," said Zhang.

          Previous Page 1 2 3 Next Page

           
          Editor's Picks
          Hot words

          Most Popular
           
          ...
          主站蜘蛛池模板: 亚洲午夜无码久久久久小说| 亚洲人成网站观看在线观看| 久9热免费精品视频在线观看| 国产91精品一区二区蜜臀| 狠狠色综合久久丁香婷婷| 亚洲一区二区三区18禁| 国产精品成人一区二区三区| 人妻少妇精品中文字幕| 福利一区二区不卡国产| 亚洲第一无码xxxxxx| 亚洲熟女精品一区二区| 国产精品午夜性视频| 中文在线天堂中文在线天堂| 亚洲国产成人久久77| 东京热高清无码精品| 国产精品国产三级国快看| 成人av一区二区三区| 国产在线欧美日韩精品一区| 日本久久一区二区三区高清| 中文字幕亚洲人妻系列| 性国产vⅰdeosfree高清| 亚洲一精品一区二区三区| 亚洲国产日本韩国欧美MV| 国产精品一区二区插插插| 麻花传媒在线观看免费| 亚洲成人精品一区二区中| 国产福利姬喷水福利在线观看| 乱60一70归性欧老妇| 成人永久免费A∨一级在线播放| 国产a网站| 白嫩少妇激情无码| 亚洲AV无码一区二区二三区软件| 国产精品丝袜亚洲熟女| 国产成人禁片在线观看| 鲁丝片一区二区三区免费| 国产精品午夜无码av体验区| 国产黑色丝袜在线播放| 亚洲人成伊人成综合网无码| 97久久综合亚洲色hezyo| 国产人妖cd在线看网站| 精品一区二区三区四区激情|