intervetebral discs degeneration 基本例句 椎间盘退变 However, the association between the grade of disc degeneration and the content of the aggrecanases and the profile of aggrecan fragments has not been well studied.但是,椎间盘退变的程度分期和多聚蛋白聚糖酶含量以及多聚蛋白聚糖碎片情况的关系并没有被很深入地研究过。