The marking mechanism is studied, the fluence threshold of marking is acquired in experiment, the conditions of marking is optimized.
分析了该打标过程的作用机理，通过实验得出了对几种不同的卷烟用纸打标的能量密度阈值条件及优化条件。
Between the initial cleaning threshold and complete cleaning threshold, cleaning percentage of the surface increases with the increasing of laser fluence.
在起始清洗阈值和完全清洗阈值之间，清洁率随着激光能量密度的升高而增大。
As the laser fluence exceeds the threshold a mirror surface appears, otherwise, an oxide layer will be formed.
在阈值以上激光作用下不锈钢表面形成镜面，而在阈值以下则出现氧化层。
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