As rotational mechanical devices accelerate or decelerate, they generate torque against their housing andor their surroundings. The projection data are classified into subsets of more significant samples and subsets of less significant samples. An occupied volume ratio of the super absorbent resin in the interspersed sections is greater than an occupied volume ratio of the super absorbent resin around the interspersed sections. 5 WKm, whose Young’s modulus is not less than 0.