Listing 4 shows the printPassword subroutine, which is used to print out the password keys and timings for reference.

清单4显示了printpassword子例程，该子例程用于输出密码键和计时以供参考。

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Based on production practice, this paper summarizes on how to effectively control the packing quality of urea product, puts forward keys and points for quality control, for reference and discussion.

根据生产实际概括和总结成品尿素包装质量的控制过程，提出质量控制的关键环节和控制点，对尿素包装质量进行有效控制。

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This paper introduces their designs and technological keys in producing this fabric to provide reference for their weaving colleagues.

文章介绍了该品种织物的产品设计过程与织造生产工艺技术要点，供同行参考。

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