单词annulation
n.: 环；成环
网络: 环状构造；环状物；取消
环,环状物
成环,成环状
复数：annulations
Composite structure, it mainly used for storage of long figure goods, annulation"s material, plates and tube material.
采用组合式结构，适用于长物料、环状物料、板材、管材。
On the Mixed Fundamental Problem in an Elastic Annulation
弹性圆环域的混合基本问题
Mechanism of the relaxation of Salvia miltiorrhiza on excised thoracic aorta annulation in rats
丹参对离体大鼠主动脉环舒张作用的机制