显著周期 meaning in English

predominant period

We also find soil moisture anomaly of this pattern in every layer has notabl e duration and a prominent period of nearly forty dekads . furthermore positive ( negative ) correlation between soil moisture and precipitation ( air temperature ) during prophase and the same period can be found
该模态在各层次土壤中具有明显的持续性特征；均存在40旬左右的显著周期；并与前期和同期降水(气温)呈显著正(负)相关关系，与约半年后的降水(气温)呈负(正)相关关系。
Most of the spatial patterns do n ' t exsit outstanding periods , specially the spatial pattern of year precipitation , the first six spatial patterns do n ' t exsit outstanding periods , if exsit , the periods are also relative short , the most master period is about 3 years , secondly about 5 years
大多惰况下各空间型不存在显著的周期，特粥是年降水空间型，前六个空间型都不存在显著周期，即使存在也是一些相对较短的周期，其中以准3年的周期为主，其次是5年左右的周期。