公元132年张衡创制地动仪、浑天仪和指南车。

AD 132. Zhang Heng created the seismograph, the armillary sphere, and the south-pointing chariot (compass).

youdao

公元132年张衡创制地动仪、浑天仪和指南车。

AD 132. Zhang Heng created the seismograph, the armillary sphere, and the south-pointing chariot (compass).

youdao