1) extension closed
扩张闭
1.
In this paper, we investigate extension closure of the full subcategory IkT (R) of mod-R consisting of T-k-torsionfree modules by the grade condition and strong grade condition of modules, and obtain a sufficent condition and an equivalence characterization for IkT (R) to be extension closed.
本文研究了由T-k-挠自由模所构成的mod-R的完全子模范畴IkT(R)的扩张闭。
2) extension property
扩张闭性
3) closed extension
闭扩张
4) closed mitral commisurotomy
闭式扩张术
1.
The follow-up of patients with mitral stenosis after closed mitral commisurotomy for ten years;
二尖瓣狭窄306例闭式扩张术后10年随访报告
5) closed symmetric extension
闭对称扩张
6) smallest closed extension
最小闭扩张
补充资料：二尖瓣闭式扩张术
二尖瓣闭式扩张术
mitral commissurotomy
是指用二尖瓣扩张器分离瓣膜粘连，扩大瓣口，解除或减轻血流从左心房进入左心室的机械性梗阻，改善心和肺循环功能。适用于隔膜型单纯二尖瓣膜狭窄的病例。1947～1948年Harken，Bailey，Brock等先后行经左心耳闭式二尖瓣扩张术取得良好疗效。目前国内大多数二尖瓣狭窄病例仍应用这种手术方法。手术死亡率约为2%，术后再狭窄率为10%～30%。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条