At present, the V_P/V_S ratio keeps in high value anomaly, we should be alert the occurrence of felt earthquakes when the mean value drop.

目前九江—瑞昌地震序列的波速比持续处于高值异常，应当警惕回落到平均值以下后发生显著有感地震。

youdao

A new method is used to calculate and to make multi-elementary anomaly maps and ratio anomaly maps for evaluation of primary anomalies.

采用新的方法计算并制作了多元素综合异常图和比值异常图用于评价原生异常。

youdao

The amplitude ratio anomaly and the velocity ratio anomaly in HBC area can be usually seen at anticlinal axis areas and small noses.

在HBC地区的纵、横波振幅比异常和速度比异常多分布于构造的轴部和小鼻褶上。

youdao

The figures in the two efforts reveal an anomaly: While Cambodia has succeeded in dramatically cutting the ratio of children who die each year, the maternal mortality figure has not dropped in a decade.

VOA: standard.2009.11.10