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1、网络购物系统《大型数据库》课程设计课题在线购书系统班级网络0901姓名黄玉娇李文妮学号0930033010209300330103成绩2011年月日theoilleveltothenormaloillevel.(2)forthesecondarypreventionoftheleakageofcoolingwaterpipefittings,valvepartsbeforeinstallationtocheck...4.2measurestoeliminatequalitydefectsofcablescablelayinginfrontoft
2、hecableconstruction,design,supervisionandconstructionunitstodeliverthedesign,anddrawingthethird.Combinedtheengineeringfieldtofindfault,addingomitteditems.BecausetheunitusedcomputerDCScontrolandaddsagreatdealofcontrolandsignalcables.Soyoushouldcarefullyreview,checksformissing
3、physicalcable,readyforconstructionandtoverifycablelength,specifications,familiarwiththecablechannelandthedevicelocationandbracketcablebracketonthesectionnumber.Atthetimeofpreparationoftheinventoryofcable,firstofall,theprofessionalcarefullystudyelectricalschematics,inaccordan
4、cewiththeprincipleofaccountingthecablepathcablevolume,thenumberofcoresused,totalvolumeanddesigninventorycheckcabletocablewithandwithoutomission,layingofthecableinordertoensuretheprocessdoesnotputacableonecable.Finally,atthetimeofinventory,preparedtotakethesamepaththecablesto
5、gether.Inventorypreparationiscompleted,laterineachenclosureaffixedonbothsidesofeachsideofthecableyouwanttolayaccuratelyverifycablelengthsandsetaside.Bridgeshouldbecombined,correctingerrors,avoidstraight,nocablebridgescaffoldingusedintheconstruction,notallowedtouseelectricity
6、(fire)cutting,fixcabletray,cabletrayisnotallowedasaweldinggroundconnectionorcabletraycannotbeusedforotherprocesses63目录一、系统开发背景简介………………………………31、系统可行性分析…………………………………32、系统开发目的……………………………………33、系统用途和需求…………………………………34、开发环境…………………………………………35、国内外研究及发展趋势…………………………36、系统优势…………………………………
7、………47、制约因素…………………………………………58、发展对策…………………………………………6二、系统功能分析与设计……………………………61、系统功能模块简述………………………………6theoilleveltothenormaloillevel.(2)forthesecondarypreventionoftheleakageofcoolingwaterpipefittings,valvepartsbeforeinstallationtocheck...4.2measurestoeliminatequalitydefectsofcable
8、scablelayinginfrontofthecableconstruction,design,supervisionandconstruction
