现陈列于北京中国历史博物馆的国家一级文物、商代青铜重器司母戊大方鼎,以其通体尺寸之大、重量之重,一直被誉为“中华第一鼎”。关于该鼎的重量,历来都写作875公斤,几成定律。但中国计量科学院最新称量的结果却是832.84公斤。为什么鼎会由重变轻了呢?这还要从古代青铜器的铸造工艺谈起。 Currently displayed at the National Museum of Chinese history in Beijing, a national cultural relics, the Shang Dynasty Bronze Heavy Division mother glutamine large square, with its overall size, weight, has been hailed as “China’s first tripod.” On the weight of the tripod, has always been writing 875 kg, a few percent into the law. However, the latest weighing results of China Academy of Metrology but it is 832.84 kg. Why Ding will be lighter and lighter? This also from the ancient bronze casting process talk.