中文摘要：

利用图在曲面上的嵌入特征，特别是面的度的大小，研究图的最大亏格下界或上可嵌入性．

英文摘要：

Using the embedding character of a graph which can be cellularly embedded on some closed surface; especially the size of faces, this paper studies the lower bounds on the maximum genus of a graph or its upper embeddabllity.