心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/
80 == 0
RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/
80 == 0, {x, -1.5, 1.5}, {y, -1.5, 1.5}, {z, -1.5, 1.5},
PlotPoints -> 30, Axes -> False, Lighting -> False,
ContourStyle -> {RGBColor[1, 0.0, 0.0]}]
求大神指点
