漏水轉渾天儀 [ㄌㄡˋ ㄕㄨㄟˇ ㄓㄨㄢˋ ㄏㄨㄣˊ ㄊㄧㄢ ㄧˊ; lou4 shui3 zhuan4 hun2 tian1 yi2] water-driven armillary sphere (Zhang Heng's famous astronomical apparatus) ◄ ►