以下为句子列表：
英文: Through the statistic analysis on the change of the melt gear pump working condition pre-and post-PET plant capacity increasing and concatenate direct spinning process, the reasons for the unsteady running were studied, the modification measures such as l
中文: 摘要通过对聚酯装置增容和后接直纺长丝前后熔体齿轮泵工况变化的统计分析，研究其运行不稳定的原因，提出改造措施，包括滑动轴承润滑油槽，齿轮泵的机械密封，降低齿轮泵出口压力，改自动提速爲手动提速等等。
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