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b超10周是多少天
更新时间: 2020-11-04 00:00:00  

70天。因为一周是7天。B超所说的孕周是从末次月经计算的,受精时间要晚两周左右。B超是在临床上应用最为广泛的影像学检查技术。B超是利用超声波的原理,对人体进行诊断的。人们最早用超声波进行人体疾病检查。

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