刮伤可视为受外在影响发生于产品表面的粗糙线性割痕，所有刮伤之宽度与长度

刮伤可视为受外在影响发生于产品表面的粗糙线性割痕，所有刮伤之宽度与长度的比值非常小，指甲可以感觉出来。

Results (English) 1:

Scratches can be seen as occurring in the surface roughness affected by external linear cuts, all the ratio of width to length of the scratches are very small, fingernail can feel it.

Results (English) 2:

Scratches can be regarded as subject to external influence occurs in the product surface rough linear cut marks, the ratio of the width and length of all scratches very small nails can feel it.

Results (English) 3:

Scratch can be regarded as the external impact of the surface of the product surface roughness linear cut, all the width and length of the scratch is very small, nails can feel.