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    Ò¶ÂÌËØaµÄŨ¶È(mg/L) Ca  = 12. 72A663 -2. 69 A645
      Ò¶ÂÌËØbµÄŨ¶È(mg/L) Cb = 22. 9A645-4. 68 A663
     ×ÜÒ¶ÂÌËØµÄŨ¶È(mg/L) CT = Ca + Cb
     ÀàºúÂܲ·ËصÄŨ¶È(mg /L) Cx. c = (1000A470 -3 .27CaÒ»104Cb) /229
     
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