Based on the analysis of the conventional oval pass design of a stretch reducing mill and the design provided by W.

在对张减机椭圆孔型传统设计方法和西德所提供的设计方法分析的基础上。

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Owing to the rather complex structure and unique movement process of rolling of the mill, it is impossible to use relevant conventional method to study the movement thereof.

由于该机的结构复杂，轧管的运动方式也比较独特，因而不能用传统的手段来研究其运动。

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Its chief suspensibility can be raised to 70% from 34%, because of using airstream comminution process instead of conventional Raymond mill, and selecting suitable adjuvants.

由于采用了气流粉碎技术，取代了传统的雷蒙机粉碎，并选用了合适了助剂，使农药可湿性粉剂的主要指标悬浮率由34%提高到70%以上。

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