About KAWAMURA KOJI
About OTSUKI KEISHI
About HIRATA NAOYUKI
About DAISAKA HIROSHI
About 日本天文学会年会講演予稿集
About planetary ring
About Saturn
About velocity
About optical thickness
About particle size distribution
About particle size(ratio)
About computer simulation
About celestial mechanics
About adsorption
About Saturn's rings
About impact speed
About particle size distribution
About N-body simulation
About Planets
About 土星
About 衝突速度
About 粒子サイズ