the part of the aorta that arches and turns downward
双语例句
The main pulmonary arteries are derived from the sixth aortic arch during intrauterine development. 摘要肺主动脉是在胎儿时期时由第六对主动脉弓衍生而来。
The association between arch plaques and hypercoagulability, and its effect on the stroke risk, was assessed with a case-control design. 利用病例对照研究分析主动脉弓斑块与高凝状态的关系及其对卒中危险的影响。
