?
  • <ul id="ogm20"></ul><strike id="ogm20"><s id="ogm20"></s></strike>
    <ul id="ogm20"></ul>
  • <kbd id="ogm20"></kbd>
  • <ul id="ogm20"><pre id="ogm20"></pre></ul>
  • Ancient Chinese bronze ware has a long history, brilliant, and has eternal historical and artistic value. Ji-copper ware refers to the articles made of Ji-copper. Bronze is an alloy of pure copper and tin, which also contains a small amount of lead. As an alloy, it has several advantages over pure copper. First, the melting point is low and easy to cast. Second, the hardness is high. The ratio of tin to lead can be increased or reduced appropriately according to the actual needs to achieve different hardness. Third, the solution has fewer bubbles in the casting process and no holes in the mould, which makes it easy to cast sharp edges and fine patterns, while the pore of the object itself is greatly reduced. Less. The invention of bronze is a great epoch-making creation. The term "lucky gold" often mentioned in ancient Chinese literature refers to pure and beautiful bronze.

    From the 21st century BC to the 5th century BC in Shang and Zhou Dynasties, archaeologists called the period from the invention of bronze to the widespread use of iron as the "Bronze Age". In the Bronze Age, brilliant achievements in bronze casting are one of the main characteristics of its cultural development. Of course, the name "ancient Chinese bronze ware" can also refer to various bronze products in Shang and Zhou Dynasties and after Shang and Zhou Dynasties. Bronze is a great invention in human history. It is the alloy of red copper, tin and lead, and the earliest alloy in the history of metal casting. After the invention of bronze, it became popular immediately. From then on, human history entered a new stage, the bronze age.

    China has a long history of using copper. About six or seven thousand years ago our ancestors discovered and began to use copper. Compared with West Asia, South Asia and North Africa, which entered the Bronze Age about 6500 years ago, the Chinese Bronze Age came later, but it can not be denied that it originated independently, because there was a time when both bronze and stone ware existed in China, which is about 5500-4500 years ago. On this basis, China invented bronze alloy, which is the same as the world bronze development model. Therefore, it can be ruled out that Chinese bronze ware is spread abroad.

    For all the countries in the Central Plains of China before the Qin Dynasty, the greatest thing is sacrifice and foreign war. As the representative of the most advanced metal refining and casting technology at that time, bronze was also mainly used in sacrificial rituals and war. The bronzes discovered in the Xia, Shang and Zhou dynasties all have the functions of ceremonial utensils and weapons as well as the accessories around them. This is different from the bronzes found in other countries in the world and forms a cultural system of bronzes with Chinese traditional characteristics.

    三上悠亚精品一区二区久久| 精品人人妻人人澡人人爽牛牛 | 人妖在线精品一区二区三区| 国产高清在线精品一本大道国产| 亚洲国产午夜精品理论片| 久久99精品国产99久久6| 在线播放精品一区二区啪视频| 久久精品一区二区三区四区| 亚洲国产精品激情在线观看| 亚洲AV无码精品国产成人 | 四虎永久精品免费观看| 久久人人做人人玩人精品| 国产一区二区精品| 亚洲精品国产自在久久| 亚洲精品无播放器在线播放| 久久久精品人妻一区二区三区四| 国内精品伊人久久久久影院对白 | 98久久人妻无码精品系列蜜桃| 国产精品自在拍一区二区不卡| 成人精品一区二区不卡视频| 18精品久久久无码午夜福利| 国产亚洲精品美女久久久| 国产AV国片精品一区二区| 在线观看91精品国产不卡免费| 中文字幕日韩精品麻豆系列| 亚洲AV无码久久精品蜜桃| a级精品九九九大片免费看| 日韩精品人成在线播放| 国内久久精品视频| 精品videossexfreeohdbbw| 99精品国产一区二区三区2021| 亚洲精品高清视频| 国产精品视频第一区二区三区| 久久伊人精品青青草原日本| 香蕉99久久国产综合精品宅男自| 精品日韩一区二区三区视频| 国产成人午夜精品影院游乐网| 精品不卡一区二区| 国产成人精品综合网站| 91亚洲国产成人久久精品| 91在线老王精品免费播放|