About SAITO NORIHISA
About ANDO KEISUKE
About HATTORI NOBUAKI
About MATSUBARA DOPPO
About 東京都産業技術研究セ
About 日本木材加工技術協会年次大会講演・研究発表要旨集
About wood processing
About drilling (machining)
About twist drill
About bending (material phenomenon)
About annual ring
About wood structure
About property of wood
About tilt angle
About incising
About micro drill
About small diameter drill
About hole bending
About Nature and structure of wood(=timber)
About Lumbering,processing
About ドリル
About インサイジング
About 曲がり
About 年輪
About 繊維