About AKASHI KOJI
About 有明工業高等専門学校
About 精密工学会誌(Web)
About twist drill
About drilling(cutting)
About deep hole drilling
About angle
About tool angle
About thickness
About grinding
About polishing(machining)
About machining accuracy
About shape measurement
About cutting oil
About social problem
About precision machining
About morphology(form)
About machining condition
About optimization
About thinning
About angle of torsion
About machining accuracy
About environment problem
About drilling
About tool geometry
About 心厚
About deep hole machining
About point angle
About Other cutting
About ドリル
About 形
About 穴加工