很明显，你的男朋友有另一种判别标准。
提出了激光切割表面质量比照判别的方法与标准。
Comparison inspection and control methods of surface quality of laser cutting were put forward.
提出了激光切割表面质量比照判别的方法与标准。
Comparison inspection and control methods of surface quality of laser cutting were put forward.
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