二维波动方程正演算法，算法具有速度快结果好等优点，是个不可多得的程序。-Two-dimensional wave equation algorithm, the algorithm has the advantages of speed and good results, is a rare procedure.

彩票分析器，可以对双色球玩法进行分析，不含对特别号码分析。-dfgfdg dfhgf df fd

Migration codes for geophysicists,both time migration and depth migration ,include f-k phase-shift migration, ray migration, phase-shifte plus interporation migration and fd migration