pipestem
1. pipestem oxygen system
[医] 导管式供氧装置
2. Pipestem fibrosis
管干状纤维化
3. pipestem ureter
管杆状输尿管
4. Ways to Decrease Ammonia Content Measuring Error by Pipestem Method
降低烟斗管法测定氨含量误差的途径