图片上传组件，可以按时间生成文件名，加水印图片，水印可以设置透明度，位置，e动力编写。 -picture upload components can be time-generation file name, plus watermark images, watermarks can set transparency, location, e momentum prepared.

泡泡运动，通过载入泡泡图片和背景。运用动量守恒定律来实现泡泡的碰撞。可能缺少几个图片，大家自己补充一下就好-Bubble motion pictures and background by loading bubble. The use of the law of conservation of momentum to achieve bubble collisions. May be missing a few pictures, we like to add your own