送交者: 自如 于 2005-8-11, 13:44:03:

回答: 那个书剑子一家人数学水平也太差了。 由 guoxj 于 2005-8-11, 13:20:34:

• not just that, you need to have material science background - steven (308 bytes) 2005-8-11, 14:21:44
  • oops, it is around 6200 kg, two 0s were missing. - steven (4 bytes) 2005-8-11, 14:28:04

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