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| 表面处理技术 (One of the latest surface treatment techniques is laser surface hardening which has the big advantage that selected areas can be hardened without treating the whole part. 激光表面硬化是最新发明的表面处理技术之一。其最大优点是不必对整个部件，而只对所选定的区域进行硬化处理。) | |||
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