The panel identifier in the paper is used to identify the specific area or plate where the research results of the paper are displayed or presented. The identifier can be used to represent the charts, tables, graphs, schematic diagrams and other contents in the paper, so that readers can identify and locate relevant information. Panel identifiers are usually presented in the form of numbers or letters and correspond to the corresponding parts in the paper. Such as 1 panel, a panel, etc. According to the specifications of the paper, style guide or journal requirements, the specific forms of panel identifiers can be different. Thesis refers to academic literature written after research, which aims to convey the author's research results, viewpoints and findings on a certain topic or problem to readers in academic circles or specific fields.