Read Edit View history 张衡 Zhāng Héng Zhang Heng Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 张衡/ 張衡 Zhāng Héng Zhang Heng proper name · Zhang Heng (78-139), a great Han dynasty astronomer and mathematician. 张衡发明了世界上第一台地动仪。 Edit Delete References Add reference No references for this word.
张衡/ 張衡 Zhāng Héng Zhang Heng proper name · Zhang Heng (78-139), a great Han dynasty astronomer and mathematician. 张衡发明了世界上第一台地动仪。 Edit Delete