讨论了非连通图C4m-1UC12m-8UG的优美性,证明了当m为任意正整数,非连通图C4m-1UC12-8UGk+10-6存在缺标号值k+16m-9的优美标号;非连通图C4m-1UC12m-8UG存在缺标号值走+1的优美标号;非连通图C4m-1UC12m-8UGk+10-5存在缺标号值k+6m-4的优美标号;非连通图C4m-1UC12m-8UGk+10m-4存在缺标号值k+10m-5的优美标号.
The gracefulness of the unconnected graph C4m-1 UC12m-8 UG is discussed. It is proved that for any positive integer m, the unconnected graph C4m-1 U C12m-8 UGk+10m-6 has the graceful labeling which is missing the label value of k+6m-4; while the unconnected graph C4m-1 U C12m-8 UGk+10m-4 has the graceful labeling which is missing the label of k+10m-5.