We observed a clear periodicity in the number of whales stranded each year that coincides with a major climatic cycle. 我们观察到每年搁浅的鲸鱼数量有明显的周期性,这与一个主要的气候周期相吻合。
These data have established a strong connection between variations in the Earth's orbit and the periodicity of the ice ages. 这些数据已经建立了地球轨道变化和冰期周期之间的强有力的联系。
Make Periodicity technology training to worker. 对工人进行工艺培训。