retension中文什么意思

把持

• blade retension:    刀片再加张力
• retension of dead fetus:    胎死不下

例句与用法

1. the incidence of retension of secretions was about 12 % . from 2 weeks to 6 months after stent implantaion, the incidence of secretion retention was about 15 %
   方法回顾性分析我院75例气道内金属支架置入患者，总结支架的并发症及治疗等。