To realize spectral reflectance in 0/d geometric condition with auxiliary integrating sphere method,we only need to knew total inner area and port area of auxiliary integrating sphere,and the reflection signal ratio of flat sample and auxiliary integrating sphere with the same material.

Some examples are given to construct accessorial equations, accessorial determinants, accessorial integral and accessorial matrix.

According to the geometrical characteristics that the cross line of non revolution quadric surface and two groups of parallel plane in specific direction is circle,a method is studied in which the solid form of non revolution quadric surface being cut by given plane may be solved directly and accurately through drawing auxiliary spherical surface which contains the circles.