The severity and the chronicity of the slips were graded. 并对滑脱的严重性和慢性化程度进行了分级。
Therefore, therapy should not be limited to the patients in lower stages of chronicity. 因此，治疗不应该仅仅局限于慢性较低程度的患者身上。
Nursing management needs to focus on the chronicity of the disease and preventing visual impairment. 护理重点是疾病的长期性和防止视力受损。
It's a relatively long process of the vocal music study, due to the chronicity and graduality of the process, which makes it rather important of the memory method function. 摘要声乐学习的过程是一个相对漫长的学习过程，由于这一过程的长期性和递进性，使得记忆的作用显得尤为重要。
