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Characterization of Some Calcareous Soils from Henan and Their Proposed Classification in Chinese So
Calcareous soils are those soils containing layers of carbonate accumulation formed by either secondary accumulation or ......
目的探讨以脑梗死为主要表现的食管癌所致Trousseau综合征的临床特点。方法收集新乡医学院第一附属医院2015-01—2017-12收治的食......
利用变量反馈方法研究了二阶级联声光双稳模型的超混沌控制。数值结果表明,在适当的反馈系数下,可将系统的超混沌态分解成若干片混沌......