初步考虑是用flash来显示仪表盘，每一帧对应仪表的每个刻度，因为flash是在网页加载的时候就一次加载进来了，这样我只需要根据数据库的读数，用js控制flash的frame就可以了，这样做的好处是无刷新效果
,Preliminary consideration is the use of flash to show the instrument panel, each frame corresponding to each instrument calibration, as flash is loaded when the page is loaded on the first entered, so I only need the database in accordance with readings of flash with js control frame it, the benefits of doing so is no refresh effect