A method for making a thin film bulk acoustic-wave resonator. Further, this soot removal can be effected when the amount of soot adhering to the inner surface of the heat transfer pipe is small, thus minimizing the soot-caused lowering in the heat transfer efficiency of the heat transfer pipe. 27 or a numerical aperture of an address pit signal occupying in a reproduced signal in a non recording state is prescribed to be more than 0. The respective voxel is assigned to one of at least two types of kidney stones as a function of the variable r.