N the operation of a printing press 印刷
The quality control parameter of presswork.
印刷品质量控制参数；
We need a new technology to solve these problems, therefore presswork watermarking is proposed.
因次，印刷数字水印技术应运而生。
In high speed offset printing, unstable performance of bailer has adverse effect on the quality of presswork.
在高速胶印生产中，水斗液的性能不稳定对印刷品的质量产生不良影响。
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