青云翻译

What causes the thickness of the sample on the back than the last to be thick 0.2mm,

Is what causes the sample thickness thicker than last time on the back of 0.2MM,

Is any reason causes at the back of this time sample thickness compared to on secondary thick 0.2MM,

What was the reason that led to this in the back of the sample thickness than the previous 0.2 MM thick.

Is what causes the sample thickness thicker than last time on the back of 0.2MM,