The present invention relates to a disposable absorbent article, such as a diaper, training pants, adult incontinence article, having a specific topsheet with an opening to receive bowel movement waste and which is such that it masks the waste present underneath said topsheet. The system comprises a browser, a script, and a document object model. The lower slide portion has an outer periphery provided with guide grooves, each of which comprises a helical rotary groove and a straight groove, peripherally in plural number. As a result of a ring gap on an input side around the piston rod, the impact plate becomes a deflecting part for the spraying liquid exiting in a ring shape, which, in a circular spraying cone directed at a flat angle with respect to the surface to be sprayed, is then emitted onto the surface to be sprayed. , and carrying out annealing for about an hour by maintaining the increased temperature; a third annealing step of changing the ambience of the gas into a 100% Ar gas ambience, increasing the temperature to about 1,200 C.