through document
6.The present study analyses current takeoff technique features of woman vault through methods of document,mathematical statistics and biomechanics. This article makes a comparison among three types of takeoff technique of handspring forward,Arab spring and jump with 180 turn and supplies theoretical bases and technical parameters for scientific training.
8.Through modifying the printing document, generated by WORD fitting the printer EPSON LQ 1600K, we can generate a printing document of the reverse word and realize the direct printing and output of the reverse word. Thus, the problem that the printing board can not be made directly in usual prock printing, which disturbs us for a long time, can be resolved.


