青云翻译

Explained the purpose and significance, Review of domestic and international research background and current status of research content and structural arrangement of the paper.

Describes research purpose and significance, summary of research background and the current situation at home and abroad, introduced the paper's content and structure of an arrangement.

Elaborated the research goal and the significance, summarize the domestic and foreign research background and the present situation, introduced the paper research content and the structure arrangement.

Explain the purpose of the research and study at home and abroad, provides an overview, background and current status of research on the thesis content and structure.

Describes research purpose and significance, summary of research background and the current situation at home and abroad, introduced the paper's content and structure of an arrangement.