59.反馈机理（1 / 2）

PmMvPA2CgOO3oOaAuOSNuOSfueS2hOeqh+i2iOWTveSIpumNj+WUuuW4m+eMvO+MkOWNuOS6uuSMkuWMleeWuOSHv+iNuOQgPmM8PmMvPA2CgOOEmuext+Wqh+i6uOSWjOWNoeiMvO+pieenuuSMleeCvOWvmOasmeWekOWvmOaxsOWMvO+LueSAqOiMgOiArucgPmM8PmMvPA2CgOOpieeHuOSMleeWuOS6uOSWjOWNoeiAoee6n+W6uOSkrealu+S2ueWMvO+pieeHuOSEmueMleeWuOSKtui/qeeWu+SsmeWekOWUsOaMsua3t+aGsOWCpuWUr+aMvO+5gueAuOSZv+iOuuSonOWvmOafueSMvO+flOeer+iMleeWuOSaruWNuOS0r+iCgOOWjOWUvOaOuuSonOWMvO+ulOmzheWLueSUsOaMsua3t+avmOaxsOWjgukgPmM8PmMvPA2CgOOMh+mTvOmonOWZkuiXvuW9g+mWu+S0l+m2l+a/lemIvuWlneaqnOaMvO+otOingOaEmueUsOaMsua3t+a2qeeUoOeJnOahsuaMvO+9meeXtOa5gueAuOSut+WbiuW9g+iEmueWu+SpruiMvO+WjOWMkOWEmue3teiNuOSflOefueSXiuaNj+Wev+ixsOWMvO+2hOeTveWAieaGkOeCpuWbruWMvO+Tgem4nOmHv+iqpOWUsOaMsua3t+aenemli+iMvO+olOeUuuWEmue9g+isnOa9g+iqj+WMvO+hsei4kea6uuSym+eOo+mapeavmOaqj+UgPmM8PmMvPA2CgOOlneaMgOikreaxlOefueS9g+ivj+WIpumNj+WTsOiAieaMvO+pieeHuOSWjOWUvOa9g+ifueS2hOeqh+iMvO+druW1geeppOWIheWEmueMleeWuOSWjOWUvOa9g+iquOSAuOSvmOaOg+iDheWppOWIheWCgOOVs+aolOejreafnOeOg+iDheWwiOW4keamp+i0l+mPhOagl+aOueS8vOSWu+SMvO+LuuSem+WIueSOgOaGuuS9meeOmOabveS/u+SOo+mapeadgOKmgOKmgOKTgem+mumMvO+WjOWGiOWzmOm0mOmMvO+UsOaMsua3t+aMvO+biuWLueSzmOmcgOIgPmM8PmMvPA2CgOOyueWli+iMvO+0qeenpOWquOQ1NjOEmueUuuW4m+eKj+Wlu+SMvO+JhOiPu+eEmueGr+WGu+evieWAuOSvmOajreaEmue6h+WapOWKuOSruuiWu+SMvO+fguanpOW2hOeNgeaMvO+fiuWepeelhuWXjOWUuuW5r+WOo+mapeadgOKBvO+fu+e7s+eJhOiPu+eEmue7see6uuSMleeWuOSquOSZv+ivmOaZv+icgOIgPmM8PmMvPA2CgOOlnea3teiGuuSljua+k+m9g+mMvO+JguiMguiXneWAuOSPr+aEmueOo+mapeaGsOWMvO+buuSAuOSPu+eepeeEmueCneaNpOWAnOaKuOSruuiut+Wqj+WMvO+7uum7uumGr+WGr+WMvO+KuOSLueSTveSruuiEmueWu+SonOWMteW2lem/peicuOSEmueGr+WGu+eXpeWAuOSMvO+Yj+W5lOaEmueggOmEnuaTveS6uuSvmOaZv+i6h+Wkrui2l+aLq+eOo+mapeaMvO+MqumPu+eEmue2l+aLueSggOm5lOaAoeiLueSOvueMruWHv+iJnOYgPmM8PmMvPA2CgOOfhOaZveSapOWEmue4uOWjreaNuOShguiAuOSJnOa7gOaMvO+3oOaCvOWbuuSAuOS6h+WapOWruui3t+aPg+W9peW0jeW7iOWkreaMgOi2hOeMvO+Jp+ifhOaEmueZveSapOWJnOahsua2ueWMvO+ZmumdvOeEmueEnuaTu+ePu+eepeeMkuWJguiMgui8vOS7seevmOaqj+WJhOiPu+eMvO+5guemp+iljuakuuSPu+eepeebuuSAuOSvmOaqj+WTgem0qeeMvO+NieWLueSkreaonOWMvO+MkOWNuOSwiOWfhOaEmue+mOaOmOaOo+mapeYgPmM8PmMvPA2dgOKfvO+XkOWJhOiPu+eEmueJqui1ruavmOaTgem+mumMvO+IueSAu+SbuuSAuOSGuuSapOWOueS8vOSmgOKmgOKvmOaZv+icgOIgPmM8PmMvPA2CgOOgvOSXgembuuSAuOSwiOWXvuWYv+iWu+SMvO+Ph+m9g+iJguiAoeiEmueJqui1ruaIkOWNnuionOWOueS8vOQgPmM8PmMvPA2CgOOWjOWYj+WEmueTveSruuiMvO+OkOWbiuWLueSzmOmsmeWekOWwiOWPhOaos+aJnOahsua2ueWMvO+NqueDv+WGuuS3v+iNseeYp+efiuWepeerouivmOaxsOWMvO+biuWPhOaos+aWj+W6pOWpmemwieiWtOWsguarouivmOaNuOSNieaaiOWMvO+fhOaPleaEmue4uOWenemMvO+LuOSLueS0sOaireaclemOmOaonOWOo+mapeYgPmM8PmMvPA2dgOKmgOKmgOKTveSruuiEmueRiOaMvO+JreeJreecgOIgPmM8PmMvPA2CgOOJhOiPu+e6h+WEvOWVs+aeiuWhsuasnOa5oOaMvO+WjOWbv+iEmueJhOiAoeiQiOaMruWhsuaYv+iKu+SCpuWWu+Scg+avj+WCgOOGuuSfnOeQiOaDv+WFi+aEmueWu+S2hOecnuaMvO+5j+WAuOS7vei7veiOo+mapeYgPmM8PmMvPA2dgOKCgOODu+exsOWAnee/i+a9g+ivj+WNuOSsnOa5oOaNseeYp+eMvO+Emue6uuSXqumvmOa9g+m0r+iPsOW2hOecnuacgOIgPmM8PmMvPA2CgOOEmueQiOaMruWlneaTgem0qeeMkuWJhOiPu+eEmueJnOa5ieeMvO+7see6uuSEmueMleeWuOSquOSZv+ixlOefgOWvmOa9g+mMvO+lneaLnOewv+iPj+aEmueKuOSNseeYp+eOu+SMvO+olOe/veSJnOaYv+iMvO+QiOaIkOWEmuePh+m9g+iEmuebiuWFhuW6uOSNkOWvmOaYv+iMvO+8gueuv+SEmuefiuWmrea6ruigl+a6uOSgm+UgPmM8PmMvPA2CgOOTveSruuiEmueXkeifnOWOuuSonOWYv+iulOmzheWMvO+EmueBpuihrOavmOaSgOWGr+imreWMvO+fiuWmrea8gueuv+S9g+iNuOS9g+iWu+SvmOaxsOWjgumMvO+6ruiTu+equOSAuOS6h+WXvuWOo+mapeaMvO+OkOWAnOYgPmM8PmMvPA2CgOOZvuihsuafueSfiuWepeevmOaxsOWMvO+JhOiPu+eJnOahsuaMvO+Gr+imreWJnOahsuaMvO+lneaAuOSkreaCpuUgPmM8PmMvPA2CgOO0leaMruWEmue4uOWenemXvuWQnuaWieWPu+eyt+Wju+SwjueMvO+Tu+e7gOaEmueEnuaTu+eTveSruuiMkuWPu+eepeehneaAuOSOuuS6n+WMvO+5luafnOWEmueitOe4kea7jOWtuOSbuuSAuOSvmOaqj+WTgem0qeeMkuWJhOiPu+eMvO+eruWwjueOuuSqh+ilneavmOaMgOiMvO+XkeifnOWvmOaNuOSvj+Wxt+Wqh+i3teizg+a2hOe9v+WOo+mapeadgOKfvO+nkOWJhOiPu+eJnOahsuaOueS8vOSFhuWTveSRiOaMvO+JreeJreecgOIgPmM8PmMvPA2CgOOuveeNveSwiOW+iea9g+ixsOWMvO+MuuSAuOSUvOaojuaMvO+0sOaireaclemOmOalu+SAnOmqj+WOo+mapeYgPmM8PmMvPA2CgOO4uOWCvOWuoeeGh+WMvO+0sOaLp+eOneaqh+i6h+WIj+WMvO+Tgem0qeeJnOaYv+iJhOiPu+eJnOaAieaEmueTveSruuiGuuSWm+e1tuaOueSgh+WMvO+mreWmreaEmuext+aYq+m6uOSBnuavmOaxsOWruuisnOafiuWepeelhuWXjOWvmOaGveSMvO+Wu+S2heW0r+iJnOahsua2hOe9meiMvO++m+WFueU2M5+K5Z6l56WG5ZeM5Yy8746j6Zql5pKA5Y245L6a6Z+55JKA5Yy874Sa54i55IC75ImE6I+754295LSp54665LOH6CA+Yzw+Yy88DYKA44WD5ou55KaC5pyW5YSa55+K5Z6l55e+5Z2I5Ya65KGy5raE57K35Yy876a55Kmk5Yuc56ic5YKm5Zuu5aWt5q6+5aKz5oyH5Yy876On6IqN5aWf54C45J+K5Z6l56WG5ZeM5Yy8742B6bCV5oa65Iuc54KY5oO45Yaw5YSa54a754a754y877K35Y245Imc57Ga546j6Zql5p2A4p+877yC566/5Ii55I6A5qq45Jm/6K+Y5qqP5ZyA4iA+Yzw+Yy88DYKA44u45Jir6bqH5Yuc572D6LGw5byc54C45Iy874O+6Lib54WA6KS45IKA46u/5Yq26LC16Iq26LSN5aC95Iy8772w5ZuK5bKW576y55e+5bC16Lq65KuI5Yy876CK5Z6i5Zq85J+55Ka65Z+A6Yy874a65KCK5Z6i5ZuK5YWG5SA+Yzw+Yy88DYKA44Cv6KOP5YSa566/5IWG5Y665Kic5YSk5Yu55I2C5rq85YSa55+K5aat5qiX6Zm/6Iy874u55ICo6IyA6ICu5yA+Yzw+Yy88DYKA44aI5YC45Ju/6L6y54u55I+a6Zq85L++5JuK5YWG5Yy8742B6YC45LC16I+v5qSt5qCb5YKA46mk5aiR5aq45IC45Iyh6JC/6ICd55+36L++5K+B5oWG5Yy876mk5aiR5aq45IC45Iu45JqE6IKA45+K5YWG5aC55K6/5KWd5qiK5aW75K+Y5rGw5Z+55Iy877OF5bib56+B5oWG5Y645L2D6aWt5oC45I+v5qWt5q6+5aKz5oyH5SA+Yzw+Yy88DYKA47Ch6I245Jub57+V6YyS5Zqu5bOo56+Y5rGw5aOC6Yy874m55KWl5YSa56Wt5q6+5aKz5oyH5bCI5Ze+5b2D6I2J5ryC566/5KOn6Kiz5pm/6KeF54mM5omc5q+U5Yy876On6Kiz5q+Y5rmy576y54Sa56Ot5p+c5yA+Yzw+Yy88DYG877K35YyA6ISa55O757uA5oav6I+E5ou45Ja75K+Y5qqP5Yy875C85KWt5pm/6L2Z546Y5p+55I6j6Zql5oe/6I245CA+Yzw=