The article analyze the influence of several key factors to the coefficient of material charger by MINITAB software, such as sort grade, the amount of order, steel type and manufacturing process.

本文通过MINITAB 软件统计分析了分选度、订货量、钢种和生产工序等关键因素对普冷产品投料系数的影响。

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The reinforced type steel heat-shrinkable finned rube is mainly used in such places which have complicated topography, bad weather and high grade of anticorrosion, and cross the rivers.

加强型钢质热缩片管主要用于地形复杂、穿河过江、气候恶劣、防腐等级高的地区使用。

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