A graceful labeling for deformation tree is given in this paper. In this way, the gracefulness of deformation trees are proved.
本文给出变形树的优美标号，从而证明了变形树的优美性。
The two best konwn labeling methods are calls graceful and harmonious labeling.
两个最著名的标号是优美标号和协调标号。
The two best konwn labeling methods are calls graceful and harmonious labeling.
两个最著名的标号是优美标号和协调标号。
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