líng
灵
xiàn
宪
língxiàn,suànwǎnglùn
ㄌㄧㄥˊㄒㄧㄢˋ,ㄙㄨㄢˋㄨㄤˇㄌㄨㄣˋ
靈憲
灵宪,算罔论 Língxiàn,Suànwǎnglùn [LingXian, an astronomy writing, Suan Wang Lun, a mathematic writing] 《灵宪》,历法书。《算罔论》,算术书