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            ?????????2011-10-13 10:25 ?????????

            ?????? ???????????????????????????????????????????????????????????????????????????????????????????????????????????????...

            ??????????????????????????????????????????????????Щ???????????????????????к????????????Щ?????????????????????????Щ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
                                                   ???????????????????
                                     ???                        ?????????
                                    ???            ?????? ≥40%    ??????≥7     ?????≤0.004
                                    ????            ?????? ≥35%    ??????≥5     ?????≤0.005
                                    ????            ?????? ≥30%    ??????≥3     ?????≤0.006
                                    ???            ?????? ≥25%    ??????≥2     ?????≤0.006
                                    ?弶            ?????? ≥20%    ?????? ????   ?????  ????
                ???е???????????????????????????????????????????????????????????????????????????????????
                                                    ????????????????
                                    ???             ???  ???  ????  ????  ???  ?弶  ????
                                ??MnO2≥%       80     75     70      65      60     55     50
                                                     ???????????????
                                              ???    ???   ????   ????   ???
                                           ????≥%    24      22      20      18
                                           ????≤%    2.5     3.0     3.5     4.0

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