1) sacral canal block
骶管封闭
1.
The synergistic action of sacral canal block with collagenase chemonucleolysis;
探讨骶管封闭对胶原酶溶核术后的增效作用
2) closed management
封闭管理
1.
The paper introduces closed management of slab yard and some work having been done such as enriching the varieties of charging and optimizing the structure of charging.
介绍了电炉厂在废钢场地封闭管理,丰富炉料品种和优化炉料结构等方面所做的工作,证实了精料方针能显著改善技经指标。
6) blind-off nozzle
封闭接管
补充资料：骶管
骶管
sacral canal
为骶部的硬膜外腔。即骶椎中的骶孔融合起来连成骶管。骶管是骶麻作用部位。
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