The frequency of stratiform clouds was remarkably positive correlative with precipitation of each month.
④层状云出现频率与各月降水正相关显著。
参考来源 - 祁连山层状云的时空分布及其环流特征分析·2,447,543篇论文数据，部分数据来源于NoteExpress
The precipitation efficiencies of two stratiform clouds processes over North China are 68% and 59% respectively.
用该方法计算华北地区降水性层状云两次降水过程的平均降水效率分别为68%和59%。
Finally, a forecast model of frequency of stratiform clouds in Qilian Mountains was built based on the circulation characteristic factors.
最后，用前期环流特征量为因子建立了祁连山主区层状云频率的预测模型。
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