A.2.0:1B.3.0:1C.4.0:1D.6.0:1
A.臟點(diǎn)B.水印C.龜紋D.網(wǎng)點(diǎn)
A.網(wǎng)距不一致B.網(wǎng)框變形C.圖像套印不準(zhǔn)D.印刷壓力不一致