A method and a system for determining a return fraud at a store are described. The first and second linkage members are then joined while secured to the strip. , each dot, in a color display obtained by using a color filter. The present invention related to a thread wound golf ball comprising a solid center, a thread rubber layer formed on the solid center, and a cover covering the thread rubber layer, of which the cover has many dimples on the surface thereof, wherein the solid center has a diameter of 35 to 38 mm and a deformation amount of not less than 0. The first edge section corresponding to a height H1 and the third edge section corresponding to a height H3 respectively have a flank angle \u03b1. To form a showerhead assembly, holes are formed in the lower plate, and also in the dielectric cover, in alignment with a plenum chamber, to provide appropriate inlet for process gas into the chamber.