About DONG Y
About LI J-Y
About Jinshu Rechuli
About high speed steel tool
About circular cone
About reamer
About surface heat treatment
About nitrogen
About hydrogen
About sulfur dioxide
About plasma application
About coated tool
About abrasion resistance
About tool wear
About abrasion test
About nitriding
About oxidation
About sulfurizing
About イオン酸窒硫化処理
About Mechanical properties
About Surface hardening
About 高速度鋼
About 円錐
About リーマ
About イオン
About 酸
About 試験
About 応用