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1·Models shown are highly recommended where a large mechanical or rotary shaft seal is required, and low noise levels are important.

这个型号强烈的推荐大型的机械或旋转密封轴是必需的，低噪音标准很重要。

2·In this article, several key points in the reform of the shaft seal used in the rotary disc tower were analyzed.

本文分析了带旋转轴塔轴封改造中应注意的几个关键问题。