They will be deleted for you when you drop your client reference to them, and they are not connected to a data graph.
当丢弃对其的客户机引用且未连接到数据图时，会将其自动删除。
This paper presents all the connected simple bigraphs whose energy does not exceed 4, and an inequality about the energy of a graph and the number of the edges of the graph.
本文给出所有能级不超过 4的连通偶图 ，并给出关于图的能级与其边的个数的一个不等式 。
Is not connected to the output of its various connectivity graph branch (c).
对不连通的图输出其各个连通支(C)。
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