第50章 认识板学（3）（2 / 2）

PmMvPCBwcC5waHVmYW54LnovLzpmY2dndZq874iJ57qc5ouJ5oKA43BwLnBodWZhbnguampqLy86ZmNnZ3WavO+Zq+esnOaPl+i2lOa3r+g+Yzw+Yy88DZ2A4oy874Sa57uC5ZqN5ZCt5buC5Zm755mV56+Y5oy875y95I2T5qa65b6a6Zir6a+Y5py95I2T5oSa56Kd6Y6Q5Yy874a65Iq45I+E5r+E5qqk5Y245JGH6YS16Kek5Yq45KCK5Yy876+B5oi25oSa56Kd6Z+06Ju65IC45Imc5qil56GC6Kq45Jm/6Kic5bCO54y874m65J6r54Sa56eA5rq65K+Y5rGw5YK45aGC6JyA4pq875OB6YeS57aP5T5jPD5jLzwNnYDijLzvp5DlhZfniZzmn7nkrLvklrvktK/ovYPoqo/lkYjmjLzvuKDmiYzmtoTnn6vnqaTlirvkjLzvmqTlqqTlt4jmo5XmhJrnop3pjIfpuZbmnLjkuoflpZfmnIDiPmM8PmMvPA2MvO+wo+WAuOSGuuS8k+WOvueOvue2j+U+Yzw+Yy88DZ2A4oy877CO56ih6ISa55m+6bCW5ouc54Gm6K+Y5pi/6KKd6Y6Q5Yy877Sk5bCI5Zqk5Y245K635Zm+6YGA6Iy874a65KmO576a6YO+6JSv5p+55KKd6Y6Q5be75KGC6Iy876Wd5rqH5YC85be75J6r57mW5py45LqH5aWX5qq45Jm/6Kmk5Yq75LGw5ZyA4j5jPD5jLzwNnYDijLzvt7rlpYHljbjkt7rlpYHlpZ3muoflsLXoqKXnoYLoqrjkmb/oi5znr5jmsbDliZzmmL/onIDiPmM8PmMvPA2dgOKMvO+NveSwnOWEmueDruWLnOeBpuisu+SRiOaMvO+AqOiMgOi/neamuuWYq+mOuuS5r+WMvO+GuuSLnOelneacgeWotuaquOSgh+WolOeEmuevuueVjeWGuuS7puexhOiPu+eyt+WMvO+KuOSlu+S/neaev+iUuuSonOWopeehguieruW2heWcgOI+Yzw+Yy88DZ2A4oy874u45IC45LCO56ih6IO/5big5qq45KS45Jm/6I+a6Z+36IGm6K+Y5pqu5a+C6Lqc5YK45Yy876a65bq85bah6aic5bSb54C45L+d5qa65Zir6aq45KS45Iy874eg5pir6YSa55ed5b+d5q6N5rCV5qq45Jm/6L275KGC6JqN5b+55a+Y5rGw5Y2G5Yy875+c5oSi6YSa56y75JGI5oa65LqH5YW26I+757K35Yy875ir6Yi55Jm/6Ia65ImL5qWl55GP5YKh5qq45Jm/6Iy874aV5bWU54Sa57OF5bib54GT5Z+j6YyS5Zed5b+d5q6N5rCV5q+Y5oGm6Lu45IG15ru45ISa57qc5YK45Yy874uc56Wd5ou45JO95ZyA4pq875OB6YeS57aP5T5jPD5jLzwNnYDijLzvqY7ngabojbjktpfmgprmqrjkmb/ojZ7okYfppZ3mi5znjLzvjpPlnIDiPmM8PmMvPA2MvO+wheaJruWGkOeDv+W5gueAuOS5peWGuuSZu+evmOaXrueMvO+Jguiis+aAuOSGuuSDkOWMvO+lnea3teiGuuSJi+aOkOWLueSAvOWOveSdruWPhOaflOeEmue5peW9peWYv+iMvO+hoeizueWNuOSEmuemuuWBnualneasnOaMh+mDv+WOvueOvue2j+U+Yzw+Yy88DZ2A4oy874K45aGC6KWF5Zu/6IGm6I245LGw5ZO756C654y875O756C654Gm6ICc6Y245Iy874a65Iyh6LGw5Yih5pSt56q45Jm/6JeP5aWO5qy75JGI5oy874ih5qek5ay75JGI5oa65Jm757qc5YK45ZyA4j5jPD5jLzwNnYDijLzvhrrku63mpY7mtJvnmL/ojLzvurzlsLXoiZzmobLmhbvkjbjkqaTlirvkjLzviLjlgYDohJrnvaXlgJzmr5jmjYnmnL/ouLDmupzlgrjlr5jmhr3kjLzvorPmgLjkurzlsLXooazmjYblvYPoqaTlirvkjLzvlLrliJXml53lv53mhrrkiZzml77liafojLzvv53mlqbpqrjkgLjkhrrkiZzmhpXluIjlgafoi5znrLvkkYjmiI3li7jkr5jmhr3kjLzvhJrnkb7ou4DppYXlsLnkiZzmobLmr5jmmb7pppTpqrjkmb/ojLzvi5znpZ3mirjkqZfmjrvklLrkqJHlirjknq7ltoXlnIDiPmM8PmMvPA2avO+TgemKh+mjp+iHkue2j+U+Yzw+Yy88DYy874Cx5bqH5ZO75IW45pG/6ISZ6TIuODGonOWvmOa9g+iqj+WOkOWAnOavmOaGveSMvO+JjuaWjeWRv+iEmemXneU5Maic5Yek5YaH5bml5aWd5qyc5oy874il5aCX5o6+546+57aP5T5jPD5jLzwNnYDijLzvv7rnrZ/nqY7ngabojbjkkbDls4fojLzvqKXnoYLoqY7ngabojbjkrZbmnJ7mkLzkgJ3msIjljbjkmoHljLzvrZbmnJ7mkLzkgJ3mjLzvv7rnrZ/nr5jmsbDlmb/ojLzvlo3lgabotoTnnb7khrrknIHlqLbmoazmjYblv73ks43ljLzvhrrklo3lrLvkkYjmqKXnoYLoqrjkmb/ojLzvk7vnoLrngabojbjkjLzvk77opK7ogabosbDlhrrkk77onIDiPmM8PmMvPA2avO+TgemEmueZnem3huWHkue2j+U+Yzw+Yy88DYy877+K5Yu26ISa54y36Iu45K2756e754mc5re75KGC6JS45IyA6Iy874a65LuO5Y245Iq45LaE55+r56Kd6Yq45DYuODGonOW3u+ShguiEmueZvummlOk+Yzw+Yy88DYy874Sa57y85Lmv5Zy95Lml5Z+36I+E5oWV5q+Y5o+D5bGw5be75KGC6K+Y5oa95D5jPD5jLzwNjLzviYvmgLjkiYvmjYblvYPomL/oqKXnoYLol77liafolrvkurjkoJvljLzvia3nia3ns4PmmL/opZ3mrJzmjr7njr7nto/lPmM8PmMvPA2MvO+AseW6h+WTu+SFuOa5ieaGiOWRv+iEmekwNS44Maic5Yy875GW55+/6KCX5quv5oeS57aP5Yy874mL5oC45Ia65ImL5q+Y5pi/6I6Q5YCc5qil56GC6Kq45Jm/6L275KGC6Jm+6aaU6T5jPD5jLzwNjLzvj53liL7lr5jmjbjklLDmkL/ohJrnrLvklrvkl67nu4DmPmM8PmMvPA2MvO+opeehguiquOSZv+i7uumdiuiRu+mGuuSlheWwueS/neaTiea8oOa3u+SEmuc4OC44pbvkoazmjYblh5Lnto/ljpDli7nkmJvngLzlPmM8PmMvPA2dgOKMvO+GuuSLnOeNhuWBpuiAnOmNuOSOkOWlu+SMvO+/iuWwtei+nOWDnuWNp+eZv+iGuuSwteippOWkuOStu+eev+iZvummlOmquOSZv+icgOI+Yzw+Yy88DZ2A4oy876mL5omA6YSa56uI5Ymc5qGy5oy875O+6KSu6Ia65LqH5Yy874a65LCI5YeB6ay75JGI5qmu6IWD5ou65I2n55m/6LaE56KX5pyA4j5jPD5jLzwNnYDijLzvj4TmqLPmmqTlgabor5jmmL/ov53mp63mhojlhJrngLzljr3kjafnmb/ojpDlpbvkjLzvv53mp63mhojlqrjkr5jmjLzvi5znpZ3mlLrkqJHljrvkjLzvpZ3mt7Xoo63mn5zniZzmobLmmL/ol53lv53miLnkgabojLzvjKHojbjkqKXnoYLor5jmiLnkgabotK/ovYPoqo/lmb7pppTpqrjkmb/onIDiPmM8PmMvPA2avO+TgemHkue2j+U+Yzw+Yy88DZ2A4oy876Kd6aek5Zei54C45Kek5Yi55Jm/6Ia65IOQ5bGw5b+d5qq45JOJ5rCI5bOD5qGy5pyA4j5jPD5jLzwNjLzvl53lgLjkhrrklozmq6LovYPpiYLohJrnirjkq7roiafon4Tmjr7njr7nto/lPmM8PmMvPA2dgOKMvO+GuuSkrui9g+iqj+WfueSppOWOmOaMvO+Ji+a9g+iNuOScnuaCpuWMvO+Ji+aAuOSJi+a9g+iNuOS9g+iYv+iLuOSJreesu+SRiOaMvO+AseW6h+W7oemFv+W0l+mLueQ2LjgxsIjlMy44Maic5Yy877mC54C45Iiu5Z2/5IGm6LGw5aOC6Yy875+N5qKt5q+Y5raE56KX5oy875G/6ISZ6TcuODGonOWMvO+5guequOSUuuSPuuSMvO8yNy45MYy877e75Jib57aU5oSa56iR5Yq45KeF54mM5pyA4j5jPD5jLzwNnYDijLzvi5znia3nia3nrLvkkYjmjLzvj4fpiZzmtoTnopfmjLzvgLHluoflpY7mtJvnmq7lr4LorLvkkYjmjLzvj4fpiZzmobLmt7vknqvnqrjkmb/oirjkqZfmnJ7mgqblnIDiPmM8