Klein s Contributions to the Foundation and Development of Object-Relation School;
克莱因与客体关系学派的创立与发展
Present Situation of the Research on Klein s Theory of Object Relations;
克莱因对象关系理论的研究现状
Reinterpretations of Klein s Idea about the Child Mental Structure;
克莱因的儿童心理结构观述评
Klein bottle,in term s of[1],is an odd bottle w hich m ay be draw ed but can not be m aked.
在文献[1]中,克莱因瓶被描绘成一种“不可能的画”,即按文[1]的意思,克莱因瓶是一种可以画出来而不能制作的怪瓶。
Only four surfaces are possible for such embedding:the sphere,the torus,the Klein bottle and the projective plane.
这样的嵌入只能在球面、环面、克莱因瓶和射影平面上实现,其五边形面的个数分别为12,0,0和6。