9、回到时域（1 / 2）

PmMvPA2dgOKfvO+ikeWapOW0m+aCseaipeWNhuWFv+WVveSMvO+GuuSUsOaPpueEmuenpOWppOWvmOaPu+eyt+WxsOWBgOiwiOW0pOW9meeMvO+flOeAuOSxiOe4m+eMvO+ln+e4m+eHgem4m+e9g+isu+SgveSMvO+0r+iRiOaBpuiCgOOEmueIk+WIk+Wmi+iXvuWHv+igveSbnOaMuOWNuOSIpuWMvO+Nv+WLruaIvuWEmuefnOe7tOaHv+iGv+Wwrui9u+SZv+iAneeth+WMvO+MsuiRrOe5ruWzn+mEmueWu+SPveSwrui6uuSquOSAuOSgveSZleeSvuWMvO+GuuSinemBp+iNhuWavOSNuOS9g+mquOSkuOSsu+SgveSOkOWlu+SMvO+6uuSquOSjgumxiOeapOWJnOagveShrueNuOScgOKavO+0r+iEmuefnOekruiIvuWMvO+LieaEmueJh+WwhuW/hOWzpeWPveShj+aMvO+QreWvneaLuOS+lOaJjueJh+WMvO+UsOajj+WGuuS5j+U+Yzw+Yy88DYKA44a65Imn6J+v5a+Y5pi/6ImO54mH5YSa57m+6Ku66Lml5Yy8762f54i+5bSX6baX5reg5oK85YSa57ml5b+95LON5Ya95Iy877i45aOt5rCI5Y2k5aKB5rGw5au/5Yi+5Yy877+h6YC45IuJ5oSa54un54mH5Z2A4i4uLi4uLpyA4j5jPD5jLzwNnYDigoDjhJrnpovom5fniL7lmrzkjJXnlrjkqrjkgLjkpo/lhrrksIjloL3ktoTnjbjkgabojLzvhr/lsK7ohJrnurrksYjnu47ll7Tmgabomq7lgLjkjpDli7nkjJXnlrjkqrjko4LpgLzlu6bnoL3kiLnko4LpjLzvsbfms4fohYPmqJTnlLjkjIDojLzvhrrkhYPmqIrlurrkqrjko4Lpua/loL3knJ7mgqbljLzvuYLngLjkj73ksK7ogabooL3kr5jmqo/lgoDjq4jluozliLnkgLvkobLmu6blq6TlmoDprpnmlrjkgrzljJLlu7Tmn5TnhJrnrLvklrvkjLzvtYblhYPmhJrnn5/ltpfmo77ktLzksbflqofoia/oipHlvYPojbjkhrrkpJnpjLzvrbrltq7lurvlhLvnurrklrjkgrzlqrjkgLjkqYvmiYDpmrzkvYPpurrkn5/ltpfmhojlqIPpp6TlpbvkgInmjLzvrIvnpK3lnq/lgq/lhJrntLnlgY3loIflhrrkhJrnl4/ljb/lvYPourrkqrjkqpPliZzmobLmjLzvv5XpqqTltJfptpfmta7mmb/ojLzvu63mgYDosIjlu7Tmn5TntJvngLjkmrzklqTlj4TmiZzmobLmnJ7mgqbljLzvgJ3mqofovYPojbjkiI/ljIfpo4LpqJzlrLvkoL3khrrktK/ojYbljLzvq6Plurrkmqnlsrflr5jmmL/oq7rolY3lr5jmu7jkv67lhJrnrLvkoL3kga/onb/kvprpiL7ljLzvhJrns43lj5rpr5jmn7nku7jkv67lhJrnq7rohJnplLjkjIDojLzvhJrnupzmj5rpr5jmjJXnlrjkgrzlhJrnirbov6nnrLvkoL3kn6vnla/mjLzvu7Pns4XliLnkgLvkobLmn7nknq7ltoXlnIDijLzvpLHmo4/lgLjkhrrknZbliY7niYflnYDin7zvp5DlsbflqofooL3kr5jmhJrntK/ooL3knIDiPmM8PmMvPA2CgOOTgemul+mtu+enu+eLp+eJh+WdgOKfvO+XkOWNk+WxveWJnOaavOShiuW7u+SEmueOkOWlu+S5r+WMvO+tuuW2ruWGuuS6u+WEu+eUuOS2ueWMvO+Fg+afhOaGuuSflOeRj+W6uuSEmueMleeWuOSCvOWMkuW2l+ahiuW7u+SgiuWCj+Wsu+SRiOacnuaCpuWjgumcgOI+Yzw+Yy88DYKA45Gs54a65JGs54Sa57CF5qOs5omO54mH5Yy875Ct5beg5oSa552A5oCJ5omc5qWL6L+E5bOl5bCI5Yuc54y877+E5bOl5Ymv6IqR5a+B5oi25oSa55OB6aWf57ml5Yaw5YSa57mF6K6954O/5aiO5omO54mH5Z2A4oKA44aQ55OB6YSa55a45ISk5bq65Lq45IyS5Yyq6Y+755O757uA5p+U57q65Ju65IC45ISa55a75Imc5qqP5YSa56OP5bqH5bSv6L2D6Iy877275Ku66ISa54yV55a45IK85aic5Za75IyS5bWG5YWD5oSa54yV55a45IK85bKc6YSz5rq65ISa56GK5bu75KCK5YKP5biu6IGF5Y245Iy876S75KKt5oGm54a65Iu45Lqp56mk5YeJ55m/6Kic5Zy65b+U5oy874yh6JC/6Li45aOt5oSa55+f5baX5rCJ5rK55Yy877u05pGI5rut5qC95Je+5ZeW5q2756e7546Q5b275Ku66LmW5rmv5ZOB6aWf55+f5baX5rCI5Z6b5ay75Ja75KKt5rKY6Ya65Lq45J+876KR5Z6K5Yi55I6A5qWv6IyV5rut5q+Y5oiP5Yq45L275Ku66Kic5YWA6KS45IyA6Iy877q65J+f5baX5qq45IC45Jak5aaP5Ya65LCI5YeB6bq65J+f5baX5oSa54yV55a45IK85aq45JCf5oa65LuO5amk5aqT5YC45Ie45Iy876q45IC45Imc5qqP5Y245La55bq65ISa54yV55a45IK85aq45KOC6buO5ZOB6aWf54Gm6Iy877G55JmU6bqp57aX5qKt5rKY6Ya65Lq45JyA4j5jPD5jLzwNgoDjpZ3muofljbjkmYbln7nkmYblr5jml67nsbDljLzvpZ3muofljbjktK/on7nkiLnkjoDmtI3ljLzvhrrkub7otJjlsIjll63lqrjkpLjkhI7nl73njpjmjpjmjLzvsbflqofouaXluZbmlK/msbDlnYDin7zvopHli7rkhYDolojmurrklb3ku7vkhJrnsIjlh4Hpsbflqofoio/lkI/mvYPojbjkvYPpurrkhJrnjJXnlrjkgrzlh7/ou47lqrjkgLjkj6/miLnkgLvkurjkh6XlvaXliL7lkYjmjLzviKbljLzvmYDiu4zlmIDihJrniYDpnIDiPmM8PmMvPA2dgOKfvO+fn+WGoumIueSAu+SEmuepi+aJgOmgveSfvO+/peicuOSEmuewiOW/i+aMleeWuOSCvOWonOWgveSvmOaZv+icgOKavO+Tgemul+mMvO+piee8pOeEmueKuOSPseWJheWAneeLnOeMvO+3teiAuOSonOWQneWLp+eJh+WAneeojOaMvO+vnea2jOiAneexiuaJjueJh+WdgOKCgOOGuuSem+WxsOWKuOSsqem5peWMvO+GuuSdr+iHv+iagOm5peWft+iPu+eyt+WRiOaMvO+lneaem+WavOSgveSwiOWzg+ahsuaMvO+GuuS7juWxveW1lOeLnOeXqueppOWquueWuOSwiOWmreWMkOW5peWMkuW5puW5puWgveScgOI+Yzw+Yy88DZ2A4p+877au5aic5Y245Ii55I6A5rmC56q45Jm/6J+876KR5Y6j6YmH5ZyA4pq877Sv6ISa54O/5Y+754245Ku85oun54mH5Yy875OB6bOR5YSa54mC5p+G54Cd57OR5YGT5Ya754a754y876OP5YC45Ia65J2W5Yy876Sx5ruF5aWQ6ISa56Wd5pKA6YmO54mH5Ye/6KWO5oy875Ct5b+I5oSa57eX5rqp57yc54C45Ia65KuJ5oy874q45Im875Ct5Yyh5oSa54q45IOQ57Cc5Y665JO95bib54i874+x5YmF5bCI5b6U5qmJ57yk54Sa572l5Yek5YaH5Yaw5Yy874q45Im876ue5ZCd5YSa56+96K+96ISa55CI5qK95Y6Q5YCd57aD6JSw5rqp56+Y5oe/6I245Iy875Ct5bOH5YSa54q45IOQ57Cc5Y665JO95bib54i876ue5ZSw5rCI5ZSJ5pel5Zak5YC85aOn6Iy875Ct5Yue6YmO5rGE6I+E5o+a6Yy876iX6bau5Ya65Ju/6D5jPD5jLzwNgoDjlbPms4PmhJrng7/lhYblhJrnsbflqofohrrkspzptJrmj4TmkaznhJrnkqfovJznuaXlh7/ojbjkjLzvk4HplJvln5jlhJrnobvmjbjkiY7niYflnYDigoDjp5DlvaXlurrkiLnkgLvkobLmsbDlrJzmuaDmop3plqTlnq7ltoXljLzvlbPmi5znhJrnurrkq4jljrnkqJzliLnkmb/ooL3ksbDln7nkjLzvp5DlvaXlnIDiPmM8PmMvPA2CgOOqu+SriOWGr+iog+minemGuuSzheWLiea6oemMvO+FouWriOWGuuSbv+ixsOWKjeWojuaKjeWMvO+pguiEmueQreWzpeW7vei0ueWPveSmi+aMvO+LieaJjuekuuekuueEmuexueScveSKuOS4hOi5peWonOWLuOS/i+aEmueIpeWgl+aLp+eJh+WCgOOGuuSiveeppOWAuOSJnOaqj+WHv+iNuOSfueSfn+W2l+aonOWMvO+0ueWBjeWgh+WlneamuOWMleeWuOSEmueRieWepeexiuiqm+monOWXruexsOWdgOKCgOO0r+ilneaol+m3teizheWdr+iIueSAu+SJnOaMvO+nkOW7juWbv+iIheWsu+SRiOaCgOOEmueinemHv+iBp+iNieappOWomOasu+SRiOa0r+ilneauoeeGh+WMvO+IpuWcgOI+Yzw+Yy88DZ2A4p+874a65LuO5Zu/6I+95LGw5aWd5p6b5YC45KC95Kmu6Iy874Sa572l5Yi55IC75Imc5pCt5b+I5oSa56C95J+874qV5bau5Z6b5Y245Ii55I6A5oa65KWd5p6b5amk5aiY5oy874Sa54O/5a+J6KGy5o+w5ZyA4pq875OB6aiA5rGK5oyH6bSY5Yy877iE6IOo5YOo5YSa54un54mH5Y+N5o+N5oSa56eA5q+D5qC55Iy874un54mH5YCd57GK5qu/5Z6j6ZCt5bOl5bu96LS55YSa54Gy5aCH5YGN5Yy65Imc5qqP5aWd5re16Iuc54y874mp5am45qi06JSw5oy8746+552757ib57+V6aq45IC45IKA44a65IC85bGw5aiX6aek5YSa54Wi5auI5Yy875+S6YaI5YC45LCI5Y245Ia65Imt55ak5aiX6aic5T5jPD5jLzwNgoDjn6/lpq3osKLmupzmpZ3mq4/ljLzvpq3opYrmqIrlqofomrzkqrvkq4jlhq/oqIPpop3pjLzvha7lj73km7/or5fpgaboj4Tmp4nmurrkhJrnvJznv5Xpjbjkqrjko4LpiZzmnJ7mgqblgoDjgLzlu6bnoq7lv67ot6/olLjktrnljLzvrZfps4XlqIrlqofosbDljpDlvbvkq7rooq7lv67omq7lrqHnqrvkq4jlhq/oqIPpop3pjLzvmq7lvq7ohJrnjYnli7rkurrku7jkiZzmobLmv67oobLmv67opZ3murrkn5TnjJnpr5jmnJ7mgqblgoDjv67osIjloq7liZzmurrku7jkpZ/nmoDpmrzksbDlqrvkq4jlhq/oqIPpop3pjLzvu7Pns4XliZzmtq7lurrku7jkjJLloq7lv67omq7lrqHnia3nubrnh4zmjLzvgb7luYnnqIPpop3pjLzvlK3ls57nhJrnurrkpZ3mhrrkj4/mq4nmjLzvr5DlgLzlqIrljZPlsKPlmb/ogJ3nj5rptLzkqrvkq4jlhq/oqIPpop3phJrnop3plqTlqJfpp6TljLzvmpLlro/lPmM8PmMvPA2CgOO7heWhteiEmueQreWpreWEmue7heWaiuasu+S5peWJnOaYv+i2l+aMkOWMvO+piuWloeiOteaPu+esnOa6n+WcuuW/lOaJnOasu+S5peWMvO+EmuehiuW7u+S6h+WolOeNuOSlu+Svj+WvmOayuuSNr+afn+W2l+aonOWUuOSMgOiCgOOJnOaruuSJreeMkOW9g+myuuSNr+afn+W2l+aquOSAuOSPr+aHgemFvuWEmue3oOaZv+i2hOeTveWMvO+OjeWqseinuueFtuiHpOW+ruiMvO+FouWriOWCseWJuOSXpeWAuOSGuuSxiuWWpeW5peWZu+ecuuW/lOafiuWJnOaQreWflOe6uOSgm+WJjueJh+WMvO+MkOWNuOSkruWFseWEmueLp+eJh+WMkuWCgOO2ruWEmueJjueJh+WyuuSNr+aGuuSwiOWxsOWOkOWfkumGiOWJuOSvouappOWKuOSQneWLp+eJh+WMvO+vjei5uOSEmue5ruWOvuecoum7heWbuuSAuOS6h+WWj+WMh+mjieaCrem1geeOu+SCgOO9peWIvuWepee+sueJp+ifhOaLp+eJh+WMvO+Jp+iAuOSGuuShneeEmueOvueOvueMh+mro+WFseWwluaonOU+Yzw+Yy88DYKA44a65LuO5Zu/6KyQ5rGw5Y2c5qOh6Jel5aCH5Ya65JGM5r++5I+a6Y6f5YaV5Zy755G956ic5Yun54mH5YKA44u65JeI5buz54C45Imt54yG5aiz5rCu6LuZ54yu5YaQ556K5YKA46+P5bON5Y+95KWF5Yun54mH5Ymt56qP5Yy876iF5ZC96Yek5b6u6I2n54SQ5Yy876Oa5Y6f5bqM5YK45bum55y/6Iy875Ct5b+I5pel5YC45Ia65K69542F6Yun54mH5bq45LGw5Zy65b+U5o6Q5aGK5bu75JCI5oyu5Yy875ak5Yu+5I245J+55Iun54mH5Yy874CJ5oWx5YSa54ur56yL57G35aqH6Imc5r2D6bq65LS55ZCI5qq45IC45I+v5j5jPD5jLzwNgoDjkJ3mr43ohJrnlb3ngKjnm7rko4LpsIjll77lmrzkupzmiZzml77lgafojbjkn7nkjpDlpbvkjLzvkbDlgKjnuYnnrIvnmZbmqJTnr5jmqo/ljLzvhrrkpZ3mi7jkmK3lnb/ki6fniYfluZbmjYXphJrnrLvkg67lgoDjlrjkurrkgLzlu6bnt7XogLjkhI7nl73njJLlhrrkqYvmiYDpuaXlpbvkgInmjLzvmZXnnIHlj4Tmv4Tmjbjkn7nki6fniYfljJXnlrjkhJrnhI7nl73niZzmobLmh7/ojbjkjLzvhJrntojlvILni6fniYflurjkhI7nl73nr5jmrJzmn47lv6XonLjkt6DmpLjkmb/ojLzvubjkmL/op6TlhJrnn5Tnnpvlu63mt7XojJLluLjkpZjmnpvlhJrnpavnmL/ogYDolL/ohJrntojlvILntLnlmqTlgY3lhrrkubTosYrohI7nl73nio/lpbvkjLzvgo/lurrkjJLlnYrotYHntLnlg43lgqbllK/mjLzvqYnnkq/miY3or43ohJrntbTojY/nq4jluYnnm7rkgLjkhrrkmZXnnb/ki6fniYfljLzvjpDli7nkpLrkirjkgY3lg7jki7nkhojlvpnnhJrnhLXoqYnnhJrnjIfpo4nmgq3ptYHnhrDljLzvk7vks7rntpTmm7/osLXohYDovK/llbzlj5rpn7fojLzvvafmu4XlpZDouoflgIDpq7rot7XogoDjqYnnurrkhJrnjJXnlrjkqrjko4Lpr5jmjbjkpZ3mn47lsbflqofohrrkmL/lgabovYPpi6fniYflqa7ohKTluJvnhJrntLnlgY3loIflgoDjrpvnqJzlho7lho7ltoTnjbvkh4jlgLjkhJrnh7/oho7lj7vnjIfpjJXnlrjkhJrnkYnlnqXnsYroqpvpqJzljLzvmoPmjYHmhJrnu4jlh4nniZzmi6fniYfljLzvjIfpvafmu4XlpZDohJrnn5/ltpfmsIjlnpvljLzvgLzlu6bnjIfpk73kq7rohJrnpIflj7DlgoHojrvkPmM8