例句與用法

1. in the first chapter, the background and some basic results are introduced . in the second chapter, we study higher order edge connectivity, and obtained ( a ) except for three graphs, all infinite circulants with finite jump sequence are super-; ( b ) except for three classes of graphs, all edge transitive graphs are optimally-( 3 ); ( c ) the optimally-( 3 ) property is characterized for vertex transitive graphs, in particular, necessary and sufficient conditions are give for cayley graphs to be optimally-( 3 ) ( d ) a sufficient condition for a graph to be optimally-( 3 ) is given
   第二章中，我們研究高階邊連通度，得到了如下結(jié)果：(a)除了三個(gè)特殊圖外，所有具有有限躍階的無限循環(huán)圖都是超邊連通的；(b)除了三種特殊圖類外，所有邊傳遞圖都是最優(yōu)-~(3)圖；(c)刻劃了點(diǎn)傳遞圖的最優(yōu)-~(3)性，特別是給出了cayley圖和極小cayley圖為最優(yōu)-~(3)圖的充分必要條件；(d)給出了一個(gè)圖(不一定是對(duì)稱圖)是最優(yōu)-~(3)圖的一種充分條件。