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Air Sac

[动] 气囊；肺泡；肺胞囊

1、[动]气囊

气囊（air sac）是鸟类的一种呼吸系统。鸟类的呼吸系统非常特化，表现在具有非常发达的气囊系统和肺气管相连通。

2、肺泡

... lacrimal sac [解]泪囊 air sac 气囊；肺泡；肺胞囊 yolk sac tumor 卵黄囊瘤；卵巢内胚层窦瘤 ...

3、肺胞囊

... lacrimal sac [解]泪囊 air sac 气囊；肺泡；肺胞囊 yolk sac tumor 卵黄囊瘤；卵巢内胚层窦瘤 ...

4、气囊直径

... beam 气囊数量 Air sac 气囊直径 Tube diameter 乘员数量 ...

strategic air command sac战略空军指挥部

air-sac mite气囊

abdominal air-sac腹气囊

cervical air-sac颈气囊

air r sac气囊;肺泡

air-sac method气囊测压法

air air sac空气气囊

axillary air-sac detail腋气囊

air sac of birds鸟类的气囊

管理学

生物学

a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways

同义词：alveolusair cell

any of the thin-walled extensions of the tracheae of insects

any of the membranous air-filled extensions of the lungs of birds

1.
N（名词） any of the membranous air-filled extensions of the lungs of birds, which increase the efficiency of gaseous exchange in the lungs (鸟类的)气囊

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