采用delphi工具，通过对历史彩票记录完成对下一期彩票进行预测。经测试，32选7，最好可达到可从32个数字中，提取出20个。-Delphi tools used by the historical record of completed lottery to predict the next lottery. Tested, 32 select 7, preferably up to 32 numbers from the extracted 20.