可见到囊壁和外囊壁的环形钙化。
并应用有限元方法分析了冷弯弯头的应力状况，得出其最大应力发生点随着外拱处壁厚减薄量的增大而向外拱处转移。
The results of FEA method for cold-bending elbow predicted that the point of maximum stress is transferred from intrados to extrados with the increase of the wall thinning.
将筒状的定子置于主动脉壁外，其功能与普通的电机相同。
A stator, functioning as that of the electric motor, is located outside the aortic wall.
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