笔者利用河流阶地与阶地形成年龄间的线性关系研究了岷江中游段的河流下蚀率。
Incision length, blood loss, operative time, drainage tube removal time, hospitalization time and recurrence rate of 2 groups were observed.观察2组切口长度、出血量、手术时间、引流管拔除时间、住院天数及复发率等情况。
Incision infection rate was 3? %.术后切口感染率为3 %。