请输入您要查询的英文单词:

 

单词 air sac
释义

air sac

noun
1A lung compartment containing air; an alveolus.This prohibits us from observing and analyzing the dynamic changes of the entire air sac....
  • Each air sac is surrounded by elastic fibers that help the lung recoil after inspiratory stretching.
  • When lungs are damaged by tobacco the crimping elastic cells surrounding each air sac are broken and lungs become over inflated.
1.1An extension of a bird’s lung cavity into a bone or other part of the body.All birds have an extensive air sac system in the thorax and abdomen....
  • The lung / air sac system of birds profoundly affects their physiology.
  • The two researchers examined the air sac systems of some 200 modern birds and identified specific patterns showing which air sacs are found in which bones.
随便看

 

英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/23 23:11:55