The key meteorological factors affecting summer locust outbreak were selected by using Spearman Order Correlation methods. 利用秩相關係數法，篩選出影響河北省窪淀和沿海兩個類型區夏蝗大發生的關鍵氣象因子。
The unbalancing value was resolved with influence coefficient method. 利用影響係數法進行不平衡量的解算。
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