Echocardiography didn't show normal main pulmonary artery bifurcationstructure, and the missing pulmonary artery was from aorta.
超声心动图表现为主肺动脉分叉结构消失,缺如一侧的肺动脉由主动脉发出。
2
Finally, the static bifurcation of equilibrium positions and local stability of the structure were discussed.
最后,讨论了该结构平衡点的静态分叉和局部稳定性。
3
New formulations are on the basis of the theory of the bifurcation and the Jacobi matrix eigenvalue structure analysis incorporating the margin and state index of the voltage stability.