periodic variation meaning in English
周期变化
周期性变化
Examples
- The periodic variation in speed of a synchronous motor with respect to the current
（同步电动机的）速度偏差同步电机运行速度的周期性变化 - The precipitation and temperature both existed 5year periodic variation in the pre - flood period in the south of china
华南前汛期降水和气温都有5a的主周期。 - The periodic variation of ssta of the two key regions combine reflect vary length periodic variation of flood season precipitation anomalies in liaoning areas
两关键区ssta周期特征反映辽宁汛期降水异常的不同长度周期特征，且有很好的互补关系。 - ( 2 ) summer rainfall of north china exists periodic variation of quasi - three years and six years , and . spring , autumn and winter also exist periodic variation of quasi - three years
( 2 )华北地区夏季存在3年左右的主周期及6年左右的次周期，春、秋、冬三季都存在3年左右的主周期。 - In the third chapter , we can obtain the soil temperature field expression under the different depth and the different time through carrying on the analysis of the temperature field of the symmetry semi - infinite big object under the periodic variation boundary condition
在第3章,通过对匀质的半无限大物体周期性变化边界条件下的温度场进行分析可以得出在不同深度、不同时刻下的土壤温度场的表达式。