本论文以燕乐二十八调的分类为视角，把典籍、古谱所记录的古今筝调归纳为“调系”和“均系”两个系统。
In this dissertation , the classification of Twenty-Eight Modes is used as an angle of view , Zheng modes in the ancient books and notations , are generalized the Diaosheng and Yungong system .
燕乐二十八调