It is an important guiding significance for industrial policy formulization to understand the scale and efficiency of timber processing enterprises.

摘要认识木材加工企业以及效率问题，对产业政策制定有重要指导意义。

It completes thoroughly the formulization of this method that Qin Jiushao limited the constant term in the numerical higher equation to be always negative.

秦九韶定高“实恒为负”,彻底完成了这一法公式化。