air sac [动] 气囊 ; 肺泡 ; 肺胞囊 ; 气囊气孔
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
To find out how having an air sac changed the sounds produced, Dr DE Boer created plastic models of the mouth, tongue and throat and forced air down them to produce different vowel sounds.
为了解释气囊如何改变声音，de Boer博士制作了口腔、舌和喉的塑料模型，并压入空气使之发出不同的元音。
Some of the models contained an air sac.
其中一些模型含有气囊。
Results:The intracavity air sac urinary catheter was invented to be used through the sheath of electrotomyoscope smoothly.
结果：该腔内气囊导尿管能顺利地在电切镜下使用。
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