中国毛莨科植物小志(十四）   总被引：1，自引：0，他引：1  

王文采 《中国科学院研究生院学报》1991,29(5):456-468

One variety of Eranthis, four species of Delphinium, one species of Anemone, and two species and one variety of Clematis are described as new. The distribution of Anemone reflexa Steph. in western part of Henan Province is reported for the first time. The morphological variation of the inflorescence of Clematis armandii Franch.is elucidated, andaccording to it Clematis hefengensis G.F.Tao is reduced to a variety of C.armandii Franch.  相似文献   

"或"与"析取"之辨析     

陈艳华 《中国科技信息》2007,(2):271-271,270

要用计算机或数学方法解决推理问题，命题符号化是关键。本文深刻剖析了自然语言中的“或”在命题符号化中的意义和作用及与逻辑联结词“析取”的关系。  相似文献