triaxial ellipsoid

Some new formulae about the area of the 3 axes ellipsoid are obtained,by which that the area of the 3 axes ellipsoid is symmetric relation to its three semi axes is implied.

得到了三轴椭球面面积的一些新的表示，并推知三轴椭球面的面积关于其三个半轴是对称的；作为特例还得到了两类旋转椭球面的面积；最后提出了当三轴椭球面接近于球面时其面积的一个相当准确的近似表达式。