正向行波

与健康人相比，糖尿病胃动力障碍患者的胃运动能量明显低于正常，正向移行波少于正常，而同步收缩波则多于正常。

It was found that there were lower stomach migrating power , less migrating waves and more synchronous contraction waves in the patients with diabetic stomach dyskinesis than that in the healthy individuals .

本文利用这两个特征，提出了基于正反向行波能量之比和正向电压行波初始极性的故障选线新判据。

According to those two characteristics , this paper proposes new criterion of fault line selection based on the ratio of the forward and backward traveling wave energy and the forward voltage traveling wave polarity .

当保护正向故障时，电压正向行波小于反向行波；而反向故障时，电压正向行波大于反向行波。

For a forward fault , the magnitude of forward voltage travelling wave is less than reverse wave , and for a reverse fault , the magnitude of forward wave is greater than reverse wave .