2019年怎样进行信件分类考研英语作文 firstofall,lettersandpacketsarecollectedinbagsfrompillarboxes,postofficesandfirms,inpostofficevans.theyarethentakentothesortingoffice,wherethebagsareemptiedandthelettersseparatedfromthepackets. followingthisstep,thelettersareputthroughmachinessothatthestampscanbecancelled(盖销).inthisprocessthedateandplaceofsortingareputoverthestampsoneachenvelop.inthenextstage,thesortingoftheletterstakesplace,accordingtothe countrytheyareaddressedto.thisisdonebyplacingthemintheappropriatepigeonhole(鸽笼式分类架).sebsequently,thelettersaretakenfromthepigeonholeandplacedinbaskets,whicharethenputontoaconveyorbelt.whileonthisconveyorbelt,thebasketsaredirectedtotheappropriatesecondarysortingsectionbymeansofcodingpegs. atthesecondarysortingframes,thelettersareputintotownsinthecountrylater,thelettersaretiedinbundlesandalabelisputonshowingthetownstheyareaddressedto.finally,theletterbundlesareplacedinbags,whichhavethepostofficeseal,postofficerailwaynumberanddestinationcodenumberonthem,andthenthesearesenttotherailwaystation.