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建立了体重、顶臀长与胎龄的直线相关回归方程。
The linear correlation regression equation of fetal weight, CR length and fertilization age were set up.
youdao
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建立了体重、顶臀长与胎龄的直线相关回归方程。
The linear correlation regression equation of fetal weight, CR length and fertilization age were set up.
youdao