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

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