About NAKAMURA TAKASHI
About NTN Technical Review
About technology
About tribology
About sphere
About lapping
About machining accuracy
About chip treatment
About bonding and joining
About fiber reinforced plastic
About wire electrical discharge machining
About running-in
About レーザラップ接合
About processing technique
About steel ball
About making the thing
About Lubrication in general
About Machine tool elements,jigs,chucks
About トライボロジー