Special treatment is recommended to activate beryllium copper surface before chromium plating. And special steps which differ from conventional chromium plating on steel parts are to be taken.
在铍青铜合金上电镀铝，需在镀铝前作特殊的表面活化处理，镀铬时也有不同于钢铁件镀铬的操作方法。
Cold abscess due to the occurrence of such special parts of the patients are infants and young children also, so choose a suitable treatment method is particularly important.
由于此类寒性脓肿发生部位特殊，患者又均为婴幼儿，因此选择合适的治疗方法尤为重要。
By taking laser welding, different steel base, hardness, surface treatment sheet steel can be welded together to meet the special requirements of different parts.
通过激光焊接可将不同材质、不同强度、不同表面处理的钢板焊接在一起，以满足零件不同部位性能的需要。
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