第四章 黑铁效应（1 / 2）

PmMvPA2CgOO7u+Shv+SMkuWRpeWYu+mEmueBp+iLueS6uuSkuOSGuuSwiOWJp+ifhOaBk+mgvOWMvO+tuOSLueS5ruWRrOeEmue6uuSquOSkuOSonOWMvO+lnea3teiGuuSRrOe3teiAuOS2hOeBqueMvO+7iOWHiee8nOePsOWqnue8nOenpOW6uuSquOSkuOQ+Yzw+Yy88DYKA45OB6bSv6ICd55Gs566+5auj5ZGq6beb6aa/6J2A4oG876C95IKx5qGy5p+55JGI5oy876Wd5o245KW75K+P5aC95JyA4j5jPD5jLzwNgoDjpZ3muITot7Xov53mirzktLvnnYDin7zvtK/ojbjkn7nkkYjmnr/ooL3kjLzvvZHlvIvmoL3kurjkpZ3mkYjmnIDiPmM8PmMvPA2CgOOTgem0r+iEmueZnemzueW3m+mmv+idgOKBvO+wiOWageWwiOW0r+iBpui2hOeqh+iCgOO3teiQj+a6uuSVveS7u+S5r+WNhuWavOSNuOSOkOWLueSvgeaItuaquOSZv+iwiOWskOWBk+mgvOWHv+iUuuWUreeRiOacgOI+Yzw+Yy88DZ2A4p+8762Q5Y245LCj5YC45LSN5aC95KC95K6X6ZGI5o2J5pqI5YKA47mv5Y245Lmv5ZOB6aWf57Gw5amX5qC95JyA4oy877eb6aa/6ICd56qe54y874i55IC75Le16LOD5raE54Gq54q85LS754y876q45Jm/6Iyu5bSv6J2A4qaA4qaA4pSh5Yu55LSX6baX5omc5pi/6LaE54Wx5YyH6bSX6bqp56q45KOC6YKA47SX6bqp55in556l56q45IC45Ii55Jm/6ICd54+X6JCa6Zi/6LaE54Wx5YSk5bG35ou45LCc5YSa54mE6LGx5beb6aGN5ZyA4oy877+F6Kek5YSa57G35aqH6Iu45KCH5Ya65I2L5oSa56CL56CL56WO5rSb54q85LS7552A4qaA4qaA4rCI5Y245LOD5oy877CI5Y245LOD5pyA4j5jPD5jLzwNgoDjpZ3mt7Xos7fouYLnrrfll77lqIrlgL/mkK3li7jkgLjkr5jmn7nkgoDjlKHli7nktJfptpfmhJrnsI7nkY/ltJfpuqnni7jksJzlhJrnmKfnnqXnqJzlt7XotK/ogZPpoLzlsIjlrJDlirzktLvnjLzvt6DmgLjklLrljY/lhJrnt5vppr/ojJLlPmM8PmMvPA2CgOONgemAuOSGuuS0r+iKvOS0u+eMkuWNhuWdr+iEmue3m+mmv+iHv+iJr+iKkeWaiOWaiOWKiuaMvO+RrOeGuuSRrOeBk+mgvOU+Yzw+Yy88DYKA44eR5qiK5a+P5Y245Iy874GT6ZGH6aWL6Jqd5baE56qH6Iy874Co6Lqv6ISa56uj5ZGq6Yy877Sv6KGy5r2D6Za75Iy8766X6Yq85LS755eu57Gw5YKA47e16JCP5rq65IGX5rmv5Y2G5Zq85I245Ja75K+B5oi25oSa55Sh5Yu55LSX6baX5o665LOF5YGT6aC85Ye/6JS65ZSt55a75Iy874Co6I245KOP5a2X6Yy875Gs54a65JGs56uj5ZGq6beb6aa/6IKA47yc54C45Kuj5ZGq6beb6aa/6Ia65Iuc54GT6aC85T5jPD5jLzwNnYDipoDipoDitK/ojbjkvYPpiLnkgLvkr5jmtI3lt5vppr/ojLzvt5vppr/orpfpkYjmmYDltpfmhJrnpZ3mjYnmmojljLzvopHlq6Plkarph43li5nmsbDlq7/liLnkmb/ovYPor4/liLnkjoDmjLzvs4/lprflgbLlgY3ljLrkr5jmqo/loL3ktK/ot5vppr/ojLzvhJrnu73otLnlr5jml67nmL/oq6Plkarph43li5nmhL7ptLnlqrjko4LprLvkkYjmjLzvrbjki7nkq6PlkarpqJzljLzvgbLlmqTlvpnngLjkj7vnsrflmYDltpfmhJrnq6Plkarph43li5nmnYjlk73lt5vppr/ojJLlkYjmnIDiPmM8PmMvPA2CgOOlnea6h+WGuuSul+mul+mRlueEmuext+Wqh+iKiuaxsOWro+WRqumKvOS0u+eMvO+fkumGiOWapOWBjeWGuuSIsOikuuSNiea6uuSquOSgh+WMvO+IueSAu+S0r+ixsOWIueSAu+SJnOaoheWMruWMvO+9iOe0m+eEmue4uOWenem8oOangOaEmueKvOS0u+ero+WRqum9m+WHlemEmue9m+WduOWqv+iUsOWci+aMvO+MkOWNuOS2iOWLheWMkuWEk+irkOWEmuero+WRqum3m+mmv+iOuOQ+Yzw+Yy88DYKA47qc5pWK5oq26KWd5oq26Je+5YqB6Iy8756i5aek5Z+E5r2l5YGT6aC85bmv5bq65Kq45KS45Kmu6Jm/6Iy877aE56ad5YSa57i45Z6d6Z+55Lq65Iy875qZ6Kaw6ISa57i45Z6d6Zi/6IGT6aC85Yy877eg5pm/6IW75I245Iy876C85aOa5YSa56iX6aqx6I+X5o6N5aqH6KWd5o645Ja45IC45K+P5Y245ISa55e/5Ze+5ZGw5bS55Y2n56OC6bCI5Ymn6J+E5omc5qGy5r2D6bq65Kq45KS45Iq85LS756+Y5pi/6Leb6aa/6K+Y5rqu6KCX5oy874q45Ku66IGT6aC85aic5Yy874Gy5YGN5Yy65JqI5ZqI5a+Y5qqP5Z+55Kuj5ZGq6bq45JCI5oGT6aC85YyA6Iy875qk5aqk5YGT6aC85aek5b2D6YS+6bS55YSa54q85LS754645Leb6aa/6D5jPD5jLzwNgoDjmKLpna/ohJrnmqTltJvmhrrkiZzmn7nkjLzvt7XogLjkqJzlq6PlkarpqrjkibjkjLzvpZ3mt7XohrrkuZfprYPnoIrltJvmjIfppK7lr4Hmkbzkqa7ojLzvpZ3msIjlhJrnq6PlkarpirzktLvnPmM8PmMvPA2CgOOsiOiAuOSMkOWenem7s+ezheWEmue6uuSkuOSMvO+Lj+W9peWEmue0ueUwN4e/6IW26KS65Lib56+Y5rSb5quj5ZGq6YSa54q85LS756uP5Y2Q5Zm/6IyS5auj5ZGq6beb6aa/6Iy877un5ZSB6KGs5qCH5Ye/6Imc5p+55KSu5Yea54Sa57au5b2b5aq45KS45Iy876ad54yS5YO+6JSv5ruz57OF5Yy8756/6Lib56e056e057au5b2b5aq45KS45Iy875qk5Y245K635b2b5Z245bCF5Yan5beb6YyS5Z+55JuK5b2b5YSa572b5Z245aq/6JSw5ZyL5oy876uj5ZGq6b2b5YeV6YSa572b5Z245aq/6JSw5ZyL5q+Y5oy876uj5ZGq6Y2Q5Zm/6Iy876uj5ZGq6YSa57KU55Sb56u66IC45ICd57+p55i/6Iy875uM54Go5aek5Zir6ZCd5qu66Kq45IC45K+Y5oy874Sa56Wd5re16IC45Ja75IyS5Yy874a65KWd5rGw5auj5ZGq6beb6aa/6Iy877SX6baX5oSa55+S6YaI5a2F5ZS65K+Y5qqP5T5jPD5jLzwNpoDipoDiPmM8PmMvPA2BvO+EmuewiOWNuOSatei9g+m/hemzsee0ueWBjeWWjeWNieWlu+S2ruWWu+SvmOaxkum3u+SEmue0sOa2jOivneaAuOSEmueMh+mZv+iVgOaqk+WMvO+Hv+idluW9peW0sOa2jOiXvuWJp+iJnOahsuaxsOWlneaOu+SWu+SEmuenpOW/lem/hemzseeAneedluWPsOWOu+SMvO+0r+ilneaBk+mgvOW5r+WMvO+zheWJnOaruui6h+WEmue6uuSquOSAuOSMkuWMvO+vg+agueSbuuSJnOaMvO+mguaJhOaMkuWQueSrv+WEmueapOW0m+alneamuOWmi+iUr+a9g+i7gOaclOeEmuetuOS7tOaflOeMvO+0r+ilnea6uuSagOmumea5r+WMvO+RrOeGuuSRrOeBk+mgvOWMvO+0sOa2jOiEmueLu+aLu+aclOeXvuWYj+WwluaNh+mjgumAneedluU+Yzw+Yy88DaaA4qaA4oyH6bSw5raM6LCI5Zaz57qL5aS45Ia65KCK5Yq45JCt5Yyh5o675LGw5YGT6aC85Yy874uP5Yuc5pu65KOC6YSa546f5Y6C55G76aic5bG35aqH6ICd57OD5j5jPD5jLzwNgoDjv5vmo7vklbPmoJfmn7nknL/ouLDmto/ltozohJrnlrvktoXljLzvto/ltozohJrnvaXlgJzmhJrnh7/onbDlsbflqofor5jmo4Lpl77liafou4DmgZPpoLzljLzvi7rknpvliLnkjoDmk4HppZ/njbjkhr3kjLzvi7jksJzlqrjkgLjkirjkqaTlqrjkgLjkqIXljK7ljLzvpZ3mnrPpkYfphJrnjYnlop3pt7XolK/mto/ltozoh4nno4LphJrnlrvkmbvnqYjltLflnYjlk73ljLzvto/ltozouZbmnLjkhJrnmoDprpnmh4nnj7DlgLjko4LphJrnop3pjIfptLfltJjlqJzlq5DlpZ3mqJTnlrvkmbvnmYDltpfmhJrnurrkq6TlnKjlia7lvonmu47llrvkqJzlqYjltLflkK3lloPou63mnYjlk73lr5jmtI3ljLzvto/ltozohJrns5HlnpvlgZPpoLzlqa7ogJzmo4LpjIDoPmM8PmMvPA2CgOObiee5kOWonOWWu+STveWYv+ixt+Wqh+iMvO+0sOa2jOiEmuevneaAuOSBuOWRh+mquOSgh+WHv+idluWWu+SYmOW5kOWxt+Wqh+iMkuWdiOWTveWZvOS2ruWquOSjgumMvO+3vuWQlOWGuuSwiOWzg+aBk+mgvOWMvO+ZgOW2l+aquOSZv+g+Yzw+Yy88DYKA45et5bCV5oSa54yI6IuS5bq65JqA6a6Z5qmu6Jq85JSs54C45K+Y5p+55KGu6LC85Iy877GS6ZGH6YSa54q45LaP5baM6Jm/6Kic5ZeA6Ii25rS55Y+v5oa95Iy876mK5a645bmC54C45Ii55KOC6Ymc5ryC566/5ISa56uj5ZGq6bmv5Zq85K6h54Sa54y877+l6Jy45I2n55m/6J2W5YW55L+V6Zye5oKm5Yy874mn6J+E5oSa56iK5bWB54yS5YW45oS+5oSa55OB6bO26I245K6+5Z245J245IC45Ii55KOC6Ya65Jqk5bS7552A5oSa57G35aqH6Kmu6L2D6Ji/6I655Ly85Iy876iU55y95ISa54Ou5Yy8746Q5Yu55LaX5o+w5aq45KCH5Yq45J2W5aic5Yy877CO55GP5YGT6aC85Yy875ak5aW75Ka25ou75oSa57Cj5aCX5oa756mJ56a25o2n56OC6ZO95Ku66Lmv5Ya65KSZ6Yy877aE56qH6LWB57qp55e+5b6Y5rSb5rSN5Ya95Iy877G95YGn6L+r54ur56Kd6aiF5aWO5rSb54i55KOC6Ze+5aWd5oKJ5a+N6IiV5qiF5Ymc5qGy5pye5oiV5oSa57Sw5raM6Iy874un54ON5Ymc5oSQ5YWA6KS45Iy874Sk5Yu55Ly85Lux55u65IC45Imc5pi/6IKJ5a+N6IiV5qiF5Y645Iy874mn6J+E5oSa56a25ou75o2n55m/6Iy8756l576y54645JO95Ku66ISa57G35aqH6ICd56a25ou75qic5Yy875Sw5rWB54645I+H6b2D6ISa56uI5bmJ54yA6LuF6Ia756GC6IC45Imc5q245Iu55LSw5raM6Jm/6LCO55GP5a6h54Sa54GT6aC85Yy874mn6J+E5oa754a754y877OR5aaL6Ka45aWV57aE572Z6LSw5raM6KOC6Yy876OP5YC45Iu45J2W5Yy8742c5pKI6Imn6J+E5rq65Kmu6LGw5aWd5re16LuX6ZOB6bOR5YSa57Sw5raM6KOC6T5jPD5jLzwNgoDjiL7koqXlhJrnio/lq47omLDlm5zmurrkmoDprpnmqa7ohrrkkIjmmI/lu7Tmn5TnhJrnq6Plkarpqa7osbDljLzviafojbjkpZ/njbjkjLzvv6XonLjkjJLlkLrmhLXohJrnub7oq7rorLvklrvkqJzlhpvpmoHoo4Lphr3kjLzvgrHmvb/ohJrnj4Tmu4jljbjkl67nsbDlgoDjq4jlp7rnqrjkmb/oq6PlkarphrrksIjlhr3kjLzvurrkhJrniL7koqXloqzmnJblqrjkgLjkr5jmjbjktrnlq6Plkarpt5vppr/ogoDjtLDmqpbohJrntLnlibjkjp/ljoLnkbvpqJzljYnlpbvkuIjngYDor5jmgoDjirjkpbvkgbjlkYfpgY3libjkqJzlsbDljLzvvIDlt7vkhJrntLDmtozor53mj7DlgLjkmb/ohJrnnZblmojlmojlsbflqofojLzvhpnpp6TluZbmnLjkqofopZ3mr5jmn7nkjLzvnrPpkYfpq4/ljLzvto/ltozomb/ojLzvi7jkgLjkhrrkkaznpovojLzvto/ltozohJrnlrDlhrvnhJrnsonohLvpkYfprpLmj7DlgLjko4Lprbjkr53mtozosbflqofogJ3ni5zngZPpoLzlPmM8PmMvPA2CgOOXvuW3juiNi+aeq+e3u+SYq+mlu+S6uuSrouiMvO+tuOSLueSavOSWjeWNi+aEmuenuueYq+mbuuSAuOSwiOWlheWBteaavOSCgOOGiOWog+mRsOWJnOaqj+WCgOOwiOWwueSTgemguOaEmueagOmumeaHv+iagOm9g+ivj+WNuOSKuOSsnOa6n+WMvO+2j+W2jOiNp+ejgumEmue9peWAnOaMvO+Emue9peWAnOavmOaNuOSYv+ieruW2heW2j+W2jOiEmue3oOaZv+iMvO+0r+iro+WRqum3m+mmv+i6jOaUuOSMgOiCgOOlneaXvuWWj+Wijea9g+iNieaRh+mEu+mEmuePh+mNh+mNgOW+meeBpuiRsOWzh+iMvO+2j+W2jOiEmue3oOajgumkluaAuOSMvO+dr+iEmueXruehruiPh+mNh+mlu+ScnuaCpuWCgOOxkum3u+S2heWMvO+xiOeAnOaEmuesu+Sro+WRqumvmOaMvO+2j+W2jOiEmue3oOajgumMvO+8gueuv+SaruWlheWTmOa5ruW0m+aMvO+BgOa2iueOmOaagOmonOWBjOadv+S4uOW2l+aGr+iPhOaMkuWRhOinpOWEmuero+WRqumpruiMvO+fguafhOaEmuePh+mbiuW2hOeqh+i5r+Wsu+Sro+WRqumYq+mQj+a9g+iYv+iMvO+olOeupemfnOa/lemCgOObiuWepee+sueMkuWTveSruuiEmuesu+Sro+WRqummtuaLu+alu+Svj+WFu+SNuOSMvO+yieintOiEmuenuueYq+mGiOWog+mtuOS2j+W2jOibuuSjgumMvO+2j+W2jOiEmuePpOWqpOWqh+ilneairOacluWAnOasu+Sro+WRqumEmueKu+WwteiPl+a6uuSuo+aLheWxjuiDuOWCgOO/peicuOSapOWIvuWGuuSTgemln+eBk+mgvOWMvO+tuOS2l+aPsOWquOSgh+WjgumEmueBteakuuSro+WRqum3m+mmv+iMkuWaiOWaiOWonOWMvO+Bk+WupemEmue1tOiCmOavmOa2j+W2jOiEmueGmemnpOW5luacuOSqh+ilneY+Yzw+Yy88DYKA44Cd54W+5Ymt54Sa55md6Ymu5Yy877aM6ICd552W5a245KSu5a+B5pG85Kic5ZmI5YGT6aC85T5jPD5jLzwNgoDju47lh7/ohrrknqPpuZbmsJzlhJrnpZ3mnqPpr4HmlLDmoYLoo4LpgJ3nnZzmjLzvt7XonqPpirjkh4nonqPpjrvkq6Plkarpt5vppr/osIjliafon4TmsbDlgZPpoLzljLzvtJfpi7nkvJznqJznjLzvpK7lr4HmkbzktJfpmb/ohrrkgLzlu6bnsbDljpDltoTnjLzvtKTluYLnhrrkuYLngZPpoLzlgJ3nua/llrvkgJ3nua/ljLzvhrrkjIfpg7/llrvksIjltK/oqIXljK7lna/opY/lmb/ogZPpoLzll77liafojLzvpZ3mt7Xohrrkkaznt5vppr/oPmM8PmMvPA2dgOKBvO+XvuW+mumIvuWLj+WLnOaEmue3oOaZv+iMvO+EmueZv+WuuOWlneaHv+i2teiHiOWAuOSLuOSiuOStuOSLueS6nOaxjeWonOW9g+iMvO+Fg+afnOeBp+i+mumjguarj+WMvO+dr+ilj+WAuOSJnOaPl+aOjeWMvO+Lj+WLnOaNveSZv+iEmuegveSLuOSAuOSGr+ikruizg+aIvuWfueSRiOaMvO+/vuS3r+icgOI+Yzw+Yy88DZ2A4oG877SF5Zir6bi45Z6d6Zqu5YC45IuP5Yuc5o295KOC6ZGI5oy876uj5ZGq6aek5bq85YSa57u96LS55Y295IC45Iav6KSu6J+k5b2D6Iy875a75Iu45IC45KWO5ruO5ZGI5oy877uI5YeJ54mt542o55yA4oy876Wd5re16Ia65Jmr57Gw5Yy874Cd57Sv6Kuj5ZGq6beb6aa/6J2A4oG877SP5q+U5qWd5oe/6La16Jm/5aWA5qW75ICJ5oy876aD57u66Ymc5pq85JGI5rq45KW75Iy876+B5oi25oa65LCI5aWO5p+55Ja75Iy875mA5baX5oSa56Wd5p6j6Y6f5aad5a+85ICd552c5qC95I2J5baX5o+w5aq45KCH5Yy874uP5Yuc5qq45IC45ISa55GI5q+Y5qOC6ZyA4j5jPD5jLzwNgoDjhrrksIjliafon4TmsbDlgZPpoLzljLzvlqTlpbvkjIfprIXlMDWHieieo+monOWYv+ivgeaUsOahguijguk+Yzw+Yy88DYKA45mA5baX5oSa55Sw5piI5qek5bq85bqH5b6U5oqH6YSa57Cl6amO5o245Kuv5qic5auj5ZGq6aq45IC45Jak5aaP5a+Y5quI5bmJ54y875+E5o+V5oSa57i45Z6d6Z+55K+B5pSw5oSa57ux54yQ5Y665Lmv5Yy876uj5ZGq6bq45Jy95Iy877eg5oC45I6Z6JuM54Sa55ee5rGx5Ye/6LC16Iyh6LCI5YWX5aW75K+P5Y6Z6JuM54Sa56245Jee5rGx5Yy877C56YSb6YSa55S/57G/56245Lqp56mk5aic5beg5oyQ5bCI5Yuc56W75K+P5bC56YSb6YSa56245Lqp56mk5Y+D5bGw5T5jPD5jLzwNioDjgoDjr4HmlLDmhJrnq6Plkarpr5jmo4LpjLzvpZ3mh7/okb/ovIDpjIfpmb/oh4nonqPpgL7ln4Dphb/or4HmlLDmhJrnp6TlurzloYLogLjkiZzmhKTluqnnqaTlhJrnop3plqTlsIjliafon4TmgZPpoLzljLzvjpDli7nktpfmj7Dlqrjkm5vlhrrkjKHonqPph4nonqPpt4/llrnmja/mo5zlkJ3lmLnkqJzlPmM8