其硬化组织主要为隐晶马氏体，片状石墨基本保持原形貌不变。
The laser hardening microscopic structures are mainly very fine martensite and the original pattern of flake graphite basically remain.
其硬化组织主要为隐晶马氏体，片状石墨基本保持原形貌不变。
The laser hardening microscopic structures are mainly very fine martensite and the original pattern of flake graphite basically remain.
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