二代小波的产生背景，与传统小波的区别，二代小波的的优点。-Second generation wavelet the background, the difference with the traditional wavelet, the advantages of second generation wavelets.

Background: The literature examining the effects of workstation, eyewear and behavioral interventions on musculoskeletal and visual symptoms among computer users is large and heterogeneous. Methods: A systematic review of the literature used a best