Information dissymmetry of key words of sci-tech papers between Chinese and English versions

To analyze the information dissymmetry of sci-tech paper key words between Chinese and English versions,such as their order,translation,number,400 sci-tech papers from 20 different high-impact medical periodicals are randomly investigated to find that 28.75% of them exist information dissymmetry phenomena to some certain.Reasons for these phenomena are briefly analyzed,and countermeasures are also summarized.