Change of underground water level dynamic tendency for more than one year may be anomalous one, when there is no increasing or decreasing in water quantity.
在无其他因素引起水量增、减条件下，地下水动态大于一年的趋势变化是地下水动态的异常变化。
2
There were a series anomalous climatic phenomena of cold and drought after and before flood year.
同时，存洪水年前后，伴随着一系列寒冷、干旱的气候异常现象。
3
Effects of the half year and month anomalous frequency velocity rate methods are tested.