transcutaneous electric nerve stimu-lation

例句：

1. 1. This treatment is effective for treating chronic pain at the skin surface level.
   这种治疗对慢性表层疼痛有效。
2. 2. The patient was given a transcutaneous electric nerve stimulation device to help relieve his pain.
   患者被给予一个皮肤表面电刺激设备来帮助缓解他的疼痛。
3. 3. The researcher found that transcutaneous electric nerve stimulation could effectively reduce muscle fatigue.
   研究者发现，皮肤表面电刺激可以有效地减少肌肉疲劳。