函数与纵坐标有关系啊

ContourPlot[-0.04 == (3 (-4 n - 8 n^2))/(
Sqrt[2] (((4 + 4 n) ((2^(1/3) 3^(2/3) (-n^3)^(1/3))/(4 + 4 n) -
na))/(-(1/n))^(1/3))^(3/2)), {n, -10, 0}, {na, 55, 65}]

这有什么问题，竖直的线只说明方程的值在这个区域内依赖某一个变量较为微弱
ContourPlot[-0.04 == (3 (-4 n - 8 n^2))/(Sqrt[
2] (((4 + 4 n) ((2^(1/3) 3^(2/3) (-n^3)^(1/3))/(4 + 4 n) -
na))/(-(1/n))^(1/3))^(3/2)), {n, -12/10, -116/100}, {na,
55, 65}]
把n的区间改小就不是竖线了