在通过扫描、量化等数字化过程中，由于各种原因，获取的这些带状图像的质量很差。
In digitized process such as scanning, quantification, as a result of each kind of reason, the quality of band-like image is very bad.
熔池中存在的对流和激光扫描过程中工作台运动的不稳定造成了熔池表面波纹状组织和熔池中三维条带状组织的出现。
Two kinds of banded structure caused by convection and unstable moving of the worktable have been observed on the surface of the molten pool and in the melted region.
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