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| 在盐槽中低温渗氮 | |||
| 软渗氮法 (用于提高工件的耐磨性和耐疲劳性) | |||
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| 塔夫盐浴碳氮共渗法 | |||
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tufftriding : 1 phrase in 1 subject |
| Metallurgy | 1 |
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