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简介：ShanghaiSantanacarshadproducedatotalof270,000carsbytheendof1993,andundergoneSKD,CKDandlocalizationstages.ThecarindustrywillsoonbecomeapillarindustryinShanghai.Duringitsdevelopment,theShanghaicarindustryhasalwaysgivenspecialattentiontolocalization,thusthelocalizationrateofcarpartsandcomponentshasincreasedyearbyyear.In1988,ShanghaiSantanacarsproduced15,000units,with13,08percentofthe

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简介：TheShanghaiStandardPartsImportandExportCorporation,oneofthelargestexportersinChinadealinginfasteners,ismainlyinvolvedintheexportofstandardpartsproducedinlinewiththestandardsofDIN,BS,ANSI,ISO,JISandAS.Thecorporation’ssalesandeconomicreturnshaveseenstablegrowth.Itsbusinessrelationswith700customersin74countriesenablesittoachieveanannualexportvolumeofUS$35

简介：ＣＡＳＥＳＴＵＤＹＯＦＣＡＤＩＣＡＰＰＩＮＴＥＧＲＡＴＩＯＮＦＯＲＲＯＴＡＴＩＯＮＡＬＰＡＲＴＳＷｕＨｏｎｇｍｉｎｇ；ＷａｎｇＹａｐｉｎｇ；ＴａｎｇＲｏｎｇｘｉＣＡＳＥＳＴＵＤＹＯＦＣＡＤＩＣＡＰＰＩＮＴＥＧＲＡＴＩＯＮＦＯＲＲＯＴＡＴＩＯＮＡＬＰＡ...

简介：ThisnotegivesanintegrationbypartsfomulafortheapproximatelycontinuousForanintegral.

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简介：Thispaperpresentsamathematicalmodelforcomponents/partsunification(CPU)policy.Thismodelconsiderstwocomponents/partsthatarefunctionallyinterchangeablebutpurchasedfromsupplierswithdifferentpricesandqualitycharacteristics.Becauseofthebuyer'squalitypreferenceandsuppliers'discountratesforbulkypurchases,themodelassiststheprocurementmanagertodeterminehowbesttopurchasethecomponents/partstomeetitsdemandwhileminimizingthetotalacquisitioncosts.

简介：Knowledgereuseisaprocessfordesigningnewproductbasedontheembeddeddesignknowledgeandexperienceofexistingproducts.Inordertoimprovequalityandefficiencyofproductdesign,amethodtoextractrelatedknowledgefromusingstandardpartsinproductdesignisintroduced.Basedonthecharacteristicsofstandardpartsandtheirapplication,knowledgereusablestandardpartslibrarywasbuiltupthroughanalysisofkeytechniquesofstandardpartmodelingsuchasknowledgeexpression,knowledgereuseandknowledgesearching.

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简介：这篇论文为认出论述一条途径孤立并且部分的形式自由的表面模型的交叉几何特征，为自动化表金属形成计划的过程的目的。发达方法论有三主要的步：B花键表面，伸出和消沉的察觉，和为形成领域的表金属的几何特征的识别的分。部分的输入几何学数据格式基于在整修B花键表面形式代表的一个IGESCAD表面模型。每表面在使用B花键表面的符号的计算获得的弯曲性质表面的帮助下被分类或细分进不同弯曲区域。那些区域令人满意一种特别几何学和拓扑学关系作为伸出和消沉(DP)形状被认出。DP形状然后用一条基于规则的途径被分类进不同几何特征。A证实发达方法的可行性学习也被介绍。

简介：Inanewstepforwardinartificialhearttechnology,FrenchmedicalcompanyCarmathasdevelopedanewartificialheartthatispartbovineandpartmachine.Theideabehindthisdesignwastouseactualbovinetissueforpartsoftheartificialheartthatwouldcomeincontactwithawearer's

简介：我们在一条森林道路的不同部分测量了erodibility和土壤总数的吝啬的重量直径(MWD)。表层土的样品从cutslope，fillslope，估计质地的道路表面和森林地面，体积密度，潮湿，CaCO3和有机物被收集。土壤总数稳定性被湿sieving决定。道路表面上的土壤erodibility分别地比在fillslope和cutslope上高2.3和1.3倍。森林土壤有最低erodibility。cutslope和道路表面的总数稳定性分别地低、很低。在有CaCO3和沙内容的cutslopeerodibility之间有一种重要否定关系。Cutslopeerodibility与增加淤泥，泥土和潮湿内容增加了。在fillslopes上，MWD与增加岩石碎片盖子，植物盖子，崽盖子，有机物和沙增加了。在fillslopeerodibility和有机物之间有强壮的否定关联，沙和MWD。在悬钩子属植物hyrcanusL下面赤裸的土壤和土壤的erodibility之间没有重要差别。并且Philonotismarchica(Hedw)Brid。

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简介：在3-2-1fixturing计划在细工品位置和取向上瞄准大飞机运输钻模，部件错误的效果和细工品表面的错误的汇编精确性与对象姿势空格描述方法被学习。印射在前面框架行李架和它的支持底的连接部分之间的模型的错误用同类的转变矩阵(HTM)被建模方法。概率的错误用蒙特卡罗方法被模仿。测量实验被激光追踪者进行验证途径的有效性，并且途径成功地被用于运输钻模的生产。

简介：Thispaperisconcernedwiththenumericalsimulationoftheinjectionmoldfillingprocess.AmathematicalmodelbasedongeneralizedHele-Shawflowforaninelasticnon-Newtonianfluidundernonisothermalconditionsisused.Ahybridnumericalschemeisemployed.Thenumericalsimulatingre-sults,pressureandtemperatureprofile,locationofthemeltfronts,areinagoodagreementwiththeex-perimentalones.

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简介：Quaternaryvolcanicrocksoftencoexistwithloess,asobservedinthesamegeologicsectionsintheShandongPeninsulaandnorthernpartsofJiangsuandAnhuiprovinces.ThedevelopmentageofShandongloessinclosetothatinthemiddlereachesoftheYellowRiver.LoessstrataareofsynchronousimplicationintheloessbeltofNorthChina.Sotheagesofvolcanicactivitiescanbees-timatedapproximatelyfromthestratigraphicrelationsbetweenloesslayersandvolcanicrocks.There-sultsofdatingoftheQuaternaryvolcanicrocks,bakedlayersandtheTLdatesofloesssamplessug-gestthattheQuaternaryvolcanicactivitycanbedividedinto4stagesintheregionstudied,withtheagesbeing1.15-1.03,0.86-0.72,0.55-0.33and0.02MaB.P.respectively.TheoccurrenceoftephraintheShandongloesssectionsispossibleduetomultipleepisodesofvolcanismduringtheQuaternarytime.

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