本文通过对应用新型上皮圈销和包胶中上罗拉的特性研究，分析探讨了皮圈组合元件改善皮圈运行状态的机理。
The paper confers and analyses the mechanism of the organs in the upper aprons on the operation status of aprons and production quality are improved greatly.
本文通过对应用新型上皮圈销和包胶中上罗拉的特性研究，分析探讨了皮圈组合元件改善皮圈运行状态的机理。
The paper confers and analyses the mechanism of the organs in the upper aprons on the operation status of aprons and production quality are improved greatly.
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