Coordinate phrases, also known as coordinate phrases, are generally composed of two or more nouns, verbs, adjectives, pronouns or quantifiers, and there is a coordinate relationship between words. Therefore, reference notes belong to coordinate phrases.

References generally refer to the references of papers, which are the reference books for the author to refer to when writing papers, and are generally listed at the end of the papers. Annotation is a further explanation or supplementary explanation of a specific content in the text of the paper, which refers to the explanation of some professional words in the paper.