英语语法分析

Embolic agents were absolute alcohol, steel ring, or gelfoam.

栓塞剂主要应用无水乙醇、钢圈和明胶海绵。

The vascular embolic agents include steel coil, gelfoam, and PVA.

血管栓塞剂选用钢圈、明胶海绵、PVA微粒三种。

National Institutes of Health - clinical trial and Gelfoam studies.

美国健康研究院-临床实验和海绵凝胶实验。