air sac of birds 鸟类的气囊
cervical air sac 颈气囊
chick embryo air sac 鸡胚气室
posterior thoracic air sac 后胸气囊
terminal air sac 终末气囊
cervical air-sac 颈气囊
air sac of b 鸟类的气囊
N 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
Some of the models contained an air sac.
其中一些模型含有气囊。
This shaft have overcome the problems which a single air sac of a traditional one existence.
这种轴克服了传统气胀轴单一气囊所存在的问题。
Objective To study the correct deal method of incarceration of urethral catheter with air sac.
目的：探讨留置气囊导尿管嵌顿后的正确处理方法。
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