THE UNIQUE HEAT TREATMENT PROCESS 独特的热处理工艺
The heat treatment process comprises annealing, hardening and tempering.
热处理过程包括：退火、淬火与回火。
The production line used by the heat treatment process are: quenching and tempering of the two.
该生产线所使用的热处理工艺有：淬火和回火两种工艺。
Coagulation of photo catalytic particles, however, was observed during the heat treatment process.
在热处理过程中，催化剂粒子有凝聚现象。
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