本论文的课题对提高塑胶片材生产线的自动化水平做出了一定的贡献，对该生产线使用寿命的延长和自动化水平的进一步提高打下了良好的基础。

This thesis makes certain contribution to the weighing system automation in the PVC film line, and prolong the use life and makes a good base for the coming automation of this production line.

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这也有利于延长驱动器的使用寿命。

This too helps extend the usable life of the drive.

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用锤头连续敲打金属表面的方法大大地延长了弹簧的使用寿命。

Great improvement has been brought about in the service life of springs by hot peening.

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