免费国产自久久久久三四区久久_久久99性xxx老妇胖精品_欧美女女_老司机深夜福利网站_91影视免费版在线看_91九色porny首页最多播放

position: EnglishChannel  > Oriental Wisdom> Bronze Sun-shaped Device: Secondary Casting Method Icon

Bronze Sun-shaped Device: Secondary Casting Method Icon

Source: Science and Technology Daily | 2024-01-04 16:09:14 | Author: ZONG?Shihan


The bronze sun-shaped device at the new Sanxingdui Museum. (PHOTO: VCG)

By?ZONG?Shihan

A bronze sun-shaped device, unearthed at the Sanxingdui Ruins in Sichuan province, has a history of more than 3,000 years. The circular device, around 84 cm in diameter, has a protruding center like the sun. Five arms are radially connected to the surrounding halo. The circular hole in the center of the device and five equally spaced circular holes on the halo are all used for fixing purposes.

The device was made by a secondary casting method. First, the halo and five arms were cast, and then the sun was embedded in the arms using an inlay casting method. Next, holes were drilled at the junction where the arms meet the halo. Finally, liquid copper was poured into the holes to firmly rivet the arms.

The bronze sun-shaped device was once considered by the public to be the most modern relic at the Sanxingdui Ruins because of its resemblance to a car's steering wheel. Speculation about its use have some people saying it is a wheel on a bronze wagon or ornament on a shield. However, the academic community generally believes that it is a sacred artifact regarded as a symbol of the sun, used in rituals.



Editor:宗詩涵

Top News

Forging a Resilient Economy with Sci-tech Power

Tiangong Ultra, developed by the Beijing Humanoid Robot Innovation Center, won the world's first half-marathon for humanoid robots in Beijing on April 19, demonstrating the prospects of China's humanoid robot industry and the epitome of the country's strategic emerging industries and future industries. These industries are surging ahead, facilitating the construction of a resilient economy with sci-tech force.

抱歉,您使用的瀏覽器版本過低或開啟了瀏覽器兼容模式,這會影響您正常瀏覽本網頁

您可以進行以下操作:

1.將瀏覽器切換回極速模式

2.點擊下面圖標升級或更換您的瀏覽器

3.暫不升級,繼續瀏覽

繼續瀏覽
主站蜘蛛池模板: 18禁亚洲深夜福利人口 | 国产精品久久一 | 一级a毛片免费完整视频在线观看 | 午夜免费看视频 | 国产福利精品在线观看 | 国产一在线精品一区在线观看 | 久久久久亚洲精品国产 | 国产AV永久无码青青草原 | www.91桃色| 免费的av | 色一情一乱一乱一区91Av | 中文字幕我不卡 | 国产妇女馒头高清泬20P多毛 | 91麻豆精品国产91久久久更新资源速度超快 | 一级做a爰片性色毛片 | 人妻少妇精品无码专区动漫 | 久久久久国产精品免费免费搜索 | 亚洲三级中文字幕在线看 | 无码黄片在线播放观看 | wwww亚洲 | 一区二区三区精品久久久 | 91在线伊人观看视频 | 久久久九九 | 亚洲伊人久久大香线蕉结合 | 久久久免费大片 | 亚洲成色777777在线观看影院 | a国产免费 | 精品国产美女福到在线不卡 | 久久这里只有精品首页 | 日韩精品一区二区在线 | 一区二区不卡在线观看 | 色视频网站在线 | JIZZJIZZ国产精品久久 | 成人爽a毛片一区二区免费 国产综合视频在线观看 | 国产日韩欧美视频免费看 | 国产一区二区三区精品视频 | 国产一级一级特黄女人精品毛片 | 成人A毛片免费全部播放 | 无码一区二区三区在线 | av在线不卡一区 | 国产乱淫av片免费 |