按照综合因子得分对这40家上市公司的三年利润质量分别进行排序，分析其利润质量变化的原因，从实证角度验证了模型。

Finally, it ranks the profit quality of the 40 listed companies, analyses the reason the profit quality changes, and verifies the evaluation model by demonstration.

youdao

按照综合因子得分对这40家上市公司的三年利润质量分别进行排序，分析其利润质量变化的原因，从实证角度验证了模型。

Finally, it ranks the profit quality of the 40 listed companies, analyses the reason the profit quality changes, and verifies the evaluation model by demonstration.

youdao