About FUKUI TAKUYA
About YUI AKINORI
About KITAJIMA TAKAYUKI
About 砥粒加工学会誌
About grinder
About grinding stone
About cover
About safety
About compressive strength
About collision
About steel plate
About flying object
About safety cover
About Material testing
About 研削盤
About 砥石
About 衝突安全性
About 研究
About 飛翔体
About 圧縮強度