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b超显示60天受孕多少天
更新时间: 2020-11-04 00:00:00  

b超显示60天受孕一般是45天,因为前15天是受精卵的结合过程,并不算在受孕的时间里面。

受精卵,指的是精卵相会。这个过程就是受精的过程。受精过程约需24小时。当一个获能的精子进入一个次级卵母细胞的透明带时,受精过程即开始。到卵原核和精原核的染色体融合在一起时,则标志着受精过程的完成。

关键词: 显示 受孕 多少

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