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1·The aim of this study was to evaluate early postoperative hemodynamic performances of different biological aortic valve prostheses in relationship to body size.

本研究的目的是评估在不同的生物主动脉瓣膜与患者体格大小相互作用下术后早期血流动力学的改变。

2·The fourth aortic arch of vertebrates, which is the principal source of the blood supply to the body.

脊椎动物的第四大动脉弓，是向全身输送血液的主要动力。

3·Objective To study the rational surgical approaches for patients with juxtarenal abdominal aortic occlusion, with or without combined vascular regions of the body.

目的探讨不同近肾腹主动脉闭塞和（或）合并有其他部位血管疾病的患者的合理手术方式。