结果表明，薄膜致密化程度随着激光功率密度的增加而增加。
The experimental results demonstrate that the shrinkage of films increase with the laser power density.
实验表明：激光合金化层组织致密，晶粒细化，与基体呈冶金结合。
The results show that the microstructure of laser alloying zone is compact, grain is fine, and has metallurgical bonding with matrix.
实验表明：激光合金化层组织致密，晶粒细化，与基体呈冶金结合。
The results show that the microstructure of laser alloying zone is compact, grain is fine, and has metallurgical bonding with matrix.
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