Methods The S/d value, RI value of UA, MCA and RA blood flow of 112 fetus cases were detected with color Doppler among them there were 64 cases of normal pregnancy and 48 cases PIH.
方法应用多普勒超声技术检测112例胎儿的脐动脉、大脑中动脉、肾动脉血流的S/D值、RI值，其中正常妊娠64例，妊高征48例。
The stillbirth group(delete those with placental abruption)was significantly higher in umbilical cord blood S/D value and lower blood pressure(P0.01).
死胎组（删除胎盘早剥者）脐动脉S/D值高于对照组，血压低于对照组（P值均〈0.01）。
Objective This paper is to investigate the ratio of the systolic peak value and the end-diastolic velocity of blood flow (S/D value) and its clinical value, which can predict fetal anoxia.
目的探讨脐动脉收缩期血流峰值（S）与舒张末期血流速度（D）的比值（S/D）对预测胎儿宫内缺氧的临床价值。
If the stiffness of the floor stab can be considered as rigid enough, the lateral stiffness of the correlative columns could be calculated directly using conventional D-value method.
如果考虑楼板的刚度足够大，利用传统的D值法可以直接计算出相关柱的侧移刚度。
When actual span D-value of equal section continuous beam in designs is less 10%, equal span chart is employed to calculate internal force.
在设计中当等截面连续梁的计算跨度相差不超过10%时，可用等跨的图表来进行内力计算。
When actual span D-value of equal section continuous beam in designs is less 10%, equal span chart is employed to calculate internal force.
在设计中当等截面连续梁的计算跨度相差不超过10%时，可用等跨的图表来进行内力计算。
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