摘要
Commissioned by the state Task Force for scientific reconstruction of Zhang Heng＇s seismograph, the ＂Eastern Han Zhang Heng＇s seismograph＂ was successfully cast on August 5, 2008 at Shanxi Yuda Group, a national cultural industry demonstration base. After sophisticated assembly and debugging, the 1.7 m tall reconstructed Zhang Heng＇s seismograph was displayed at the Science and Technology Museum of China in August 2009,
Commissioned by the state Task Force for scientific reconstruction of Zhang Heng's seismograph,the'Eastern Han Zhang Heng's seismograph'was successfully cast on August 5,2008
