英语语法分析

Improving the Success of Retrograde Tracheal Intubation.

增加逆行气管插管的成功率。

The Effect of Tracheal Gas Insufflation on Gas Exchange Efficiency.

气管内气体吹入通气对气体交换效能的影响。

Only 15 cases of tracheal chondrosarcoma have been reported in the literature.

目前在文献报道中仅有15例气管软骨肉瘤。