英语语法分析

Methods The ratio of B/A, PI, RI of orbit artery was detected in 42 cases with EPH gestosis and control group (90 healthy pregnant women).

方法测定42例妊高征孕妇眼动脉血流参数（B/A、PI、RI）并与90例正常孕妇作对照分析以观察血流参数变化。