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在高压缸排汽的总管上装有动力控制止回阀，以便在事故情况下切断，防止蒸汽返回到汽轮机，引起汽轮机超速。在高压缸排汽总管的端头有蒸汽冲洗接口，以供在管道安装完毕后进行冲洗，在管道冲洗完成后用堵头堵死。centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,第一讲乘、除法的运算定律和性质★熟能生巧，我试做用简便方法计算下面各题：（1）12×4×25（2）125×56（3）125×（80＋4）（4）（128＋1088）÷8★★自主探索，我能行：用简便方法计算下面各题：（1）125×13×8（2）25×32×125（3）（100－8）×25（4）180×125（5）125×88（6）1375÷25（7）12880÷230（8）（1040－324－528）÷4（9）1125÷125（10）4505÷17÷5第二讲乘法中的巧算★熟能生巧，我试做用速算法计算下面各题：（1）68×101（2）256×1002（3）45×9（4）762×999（5）536×5（6）638×15（7）32×25（8）130×25（9）49×75（10）56×125（11）66×375（12）295×295★★自主探索，我能行用速算法计算下面各题：（1）74×201（2）154×601（3）457×99（4）34×98（5）437×5（6）739×15（7）17×25（8）68×75（9）87×75（10）77×125（11）256×625（12）555×375（13）888×875（14）705×705第三讲填等式★熟能生巧，我试做1、把0~9这十个数字填到下面的□里，组成三个等式（每个数字只能填一次）：□+□=□□－□=□□×□=□□2、在下面的□里填上＋，－，×，÷，（）等符号，使各个等式成立：4□4□4□=1，4□4□4□=3，4□4□4□=5，4□4□4□=9。在高压缸排汽的总管上装有动力控制止回阀，以便在事故情况下切断，防止蒸汽返回到汽轮机，引起汽轮机超速。在高压缸排汽总管的端头有蒸汽冲洗接口，以供在管道安装完毕后进行冲洗，在管道冲洗完成后用堵头堵死。centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,2◆智慧树：填等式都是要对题目经过初步分析后，将满足题目条件的所有可能情况全部列举出来，再逐一试算，决定取舍。这种方法叫做枚举法，也叫穷举法或列举法，它适用于有几种可能情况的题目，如果可能的情况很多，那么就不宜用枚举法。★★自主探索，我能行：1、将2~7这六个数字分别填入下式的□中，使得等式成立：□+□－□=□×□÷□2、在下面的算式里填上括号，使等式成立：（1）4×6+24÷6－5=15（2）4×6+24÷6－5=35（3）4×6+24÷6－5=48（4）4×6+24÷6－5=03、加上适当的运算符号和括号，使下式成立：12345=1004、将1~9分别填入下式的九个□内，使算式取得最大值：□□□×□□□×□□□。5、将1~8分别填入下式的八个□内，使算式取得最小值：□□×□□×□□×□□第四讲数阵图（一）★熟能生巧，我试做：1、将1～7这七个数分别填入下页左图中的○里