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| surface treatment technique (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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表面处理 技 术 : 1 phrase in 1 subject |
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