balanced anesthesia的用法和样例：
例句
- Balanced anesthesia using volatile anesthetics and fentanyl were used for all cases.
所有的案例都应用了挥发性麻醉药和芬太尼来平衡麻醉。 - However, during positive pressure ventilation and balanced anaesthesia, there was no evidence of different effects caused by the two anaesthetics.
然而，处于正压通气及平衡麻醉时，这两种麻醉药效果没有差异。
