Results: the existence of the phenomenon of the deficiency in both blood and oxygen of the fetus when the irregular image of the fetus umbilical artery blood flow spectrum curve emerged.
结果：胎儿脐动脉血流频谱曲线出现不规则图像时，有可能提示胎儿已有供血供氧不足的现象存在。
2
This paper analyzes the deficiency of the straight design method of highway alignment and puts forward the necessity of the researching curve design method.