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225天是多少周几个月
更新时间: 2020-11-05 00:00:00  

225天是怀孕32周+1天。怀孕周期是从末次月经第一天开始算起,每七天为一周,每四周为一个月。如果月经周期不规律,可以根据同房受精的时间往前推14天为末次月经时间,或者根据早期超声提示的孕周推测末次月经,或者根据早期NT超声推测的孕周来推测末次月经更准确。

关键词: 多少

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