second-level index造句

Based on the understanding of two concepts , " self - innovation " and " national innovation capability " , the author explores the connotation of " national self - innovation capability " ; develops the evaluation index system of national self - innovation capability ; classifies the capability into four first - level aspects , input capability , output capability , expansion capability and support capability ; further decomposes those four indexes into sixteen second - level indexes
摘要作者在理解和认识“自主创新”和“国家创新能力”两个概念的基础上，探讨了“国家自主创新能力”的内涵，并提出了国家自主创新能力评价指标体系，将国家自主创新能力分解为国家自主创新的投入能力、国家自主创新的产出能力、国家自主创新的扩散能力和国家自主的支撑保障能力四个一级指标，且将一级指标细分为十六项二级指标。
It's difficult to find second-level index in a sentence. 用second-level index造句挺难的