Results: the morphology, the size and the lie of the fetal external ear could be clearly seen after 20 week pregnancy.

结果：胎儿外耳在孕20周以后即可清晰显示其形态、大小及位置。

youdao

Results: the morphology, the size and the lie of the fetal external ear could be clearly seen after 20 week pregnancy.

结果：胎儿外耳在孕20周以后即可清晰显示其形态、大小及位置。

youdao