แปลว่า(english) Smoothing surfaces through friction between the material and material such as hardened metal media.
Burnishing 2
คำศัพท์ภาษาอังกฤษ
คำศัพท์ภาษาอังกฤษ
แปลว่า(english) Smoothing surfaces through friction between the material and material such as hardened metal media.