工艺火锅 art chafing dish

退火工艺 Annealing Process ; annealing technique ; ANNEALING

耐火工艺 refractory technology

回火工艺 tempering process ; temper technology

火焰树艺术节 annual flame tree arts festival

均热淬火工艺 [机] soak-quench technique

火箭工艺 rocketry

等温淬火工艺 isothermal quenching process

锻热淬火工艺 Direct Forge Quenching