送交者: HHS 于 2010-03-30, 10:32:13:

• you missed my point. I meant students that have not learned logarithms - Amsel (35 bytes) 2010-03-30, 10:34:39 (427293)
  • 瞎撤。实际上我不记得高中化学曾经说PH值是什么对数了 - HHS (176 bytes) 2010-03-30, 10:37:48 (427294)
    • pH = - log10 (concentration of hydrogen cations in mol per liter) (无内容) - Amsel (0 bytes) 2010-03-30, 10:40:58 (427295)
      • 老师当浓度用了，就按浓度算嘛。 (无内容) - DW (0 bytes) 2010-03-30, 14:06:50 (427397)

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