漏水转浑天仪 (漏水轉渾天儀) lòushuǐ zhuǎn húntiānyí

lòushuǐ zhuǎn húntiānyí phrase water-driven armillary sphere (Zhang Heng's famous astronomical apparatus)
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '漏水轉渾天儀')