长时间扩散退火可有效地提高粉末锻造钢的韧性。
Toughness of powder forging steel can be increased efficiently by diffusion annealing in longer time.
公司现有铸造钢球生产线两条，锻造钢球生产线三条，回火线一条。
Now our company has two casting steel ball production lines, three forging steel ball production lines, one temper line.
刀片原材料：除了大马士革，熟练刀匠可以根据自己选择的任何锻造钢进行测试。
Blade Material: The Journeyman Smith may test with any forged steel of his or her choice except Damascus.
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