This paper gives a method for the graceful tree to grow and deform.
本文给出一种优美树的生长与变形的方法。
Edofocused his love to the plant until it grew into a tall, graceful tree.
埃都将自己所有的爱都灌注在这棵植物上,最后它长成了一棵高大又美丽的树。
In this paper is studied the gracefulness of a class of join graphs derived from the graceful tree and related graphs. Some results are given.
本文研究了优美树的一类联图的优美性,证明了这类图是优美图,同时还得到两类由它导出的优美图。