Double-tube drainage的用法和樣例：
例句
- Catheter drainage of the bladder relieves trigonal stretch and improves drainage from the upper tract.
膀胱置管引流減少三角區牽張，并改善上尿路引流。 - Methods use root tube drainage or toot tube treating after opening a window in apical labium,conservative treatment on apical cyst,use the root tube filling agent suitable filling.
方法采用根管引流或根尖部唇側開(kāi)窗引流后根管充填劑適當超填方法保守治療根尖囊腫。
