本标准规定了根据参考边缘指定单列穿孔和多列非对称穿孔电影原始胶片卷的卷绕类型的方法。

This standard specifies a method for designating the type of winding for rolls of single-row perforated and multiple-row, nonsymmetrically perforated motion-picture raw stock film in terms of the reference edge.