比如说你要五十位,也就输入: NSolve[{ (35902563/1000 - x)^2 + (27961019/1000 - y)^2 + (-5000 - z)^2 == (7685756/1000)^2, (37171632/1000 - x)^2 + (34797071/1000 - y)^2 + (-5623 - z)^2 == (8313475/1000)^2, (43459139/1000 - x)^2 + (29358478/1000 - y)^2 + (-5300 - z)^2 == (5786234/1000)^2}, {x, y, z},50] 即可 要注意原方程中的小数最好改为分数。