天气预报 > 其他 > 头围21厘米是孕多少周了
头围21厘米是孕多少周了
更新时间: 2020-11-04 00:00:00  

头围21厘米是怀孕23周,胎儿头围是指绕胎头一周的最大长度。

胎儿的头部从前面到后面最长的部分,就是胎儿头围。如果胎儿的头围过大或是过小,对于生产和宝宝健康而言都是不利的。

关键词: 厘米 多少

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