This paper makes a brief introduction to different types of punctuation marks and expounds the basic requirements, definition of quotations, how to use quotations and the implication of quotation marks, and the application of the punctuation at the end of the quotation, especially the use of the note mark.

The neologism is usually stressed in an oral way and marked or cued with quotation marks in a written way.

The usage of particularly-referring quotation marks can be roughly divided into two classes of the non-rhetorical one and the rhetorical one.

Formation of guidance signal of anti-radiation missile under the action of multiple sources;

In this paper,the guidance signal model is given in the case of single source,and the decoying effect is simulated in several cases of radiation source distributions.

Discusses some conceptions of indexical graphs, and proves that G isn t an indexical label- ing if ; Kmn is indexical graphic only when it is star or K2n, and the group of any non- connecting indexical labeling graphs is indexical.