优点 是，利用现有设备，既可以提高扩印速度，又不会影响扩印照 片的质量。
The invention has the advantages that: it can use present device, to improve the print speed without affecting picture quality.
优点 是，利用现有设备，既可以提高扩印速度，又不会影响扩印照 片的质量。
The invention has the advantages that: it can use present device, to improve the print speed without affecting picture quality.
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