ตัวกรองผลการค้นหา
discoloration
แปลว่าการเปลี่ยนสี, สีตก
Bright Annealing 2
แปลว่า(english) The process of annealing in a protective atmosphere so as to prevent discoloration of the bright surface desired.
Burning
แปลว่า(english) (1) Permanently damaging a metal or alloy by heating to cause either incipient melting or intergranular oxidation. (2) In grinding getting the work hot enough to cause discoloration or to change the microstructure by tempering or hardening.