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1.
INTRODUCTIONIntheManifestooftheCommunistParty,MarxandEnglesdeclared :“Inplaceoftheoldbourgeoissociety ,withitsclassesandclassan tagonisms,weshallhaveanassociation ,inwhichthefreedevelopmentofeachisthecondi tionforthefreedevelopmentofall”(Marx&En gels ,1 984 ) .…  相似文献   

2.
·Reviews·OntheInteractionsofMicrowavewithLightwave XUDe ming ZHOUShi ping  ( 1 )………………………………·Letters·ANewElasticityandFiniteElementFormulationforDifferentYoung’sModuluswhenTensionandCompressionLoadings YEZhi ming YUHuan ran YAOWen juan  (89)……………………………BriefIn…  相似文献   

3.
StressAnalysisoftheGlassBulbof35-inch(V)120°ColorPictureTubeTorongeyPeterKimanus(MoiUniversity,DepartmentofPhysics,P.O.Box390...  相似文献   

4.
INTRODUCTIONSincethepolymerizationofmethylmethacrylate(MMA)withrareearthcatalystswasrealizedforthefirsttimein1991,aseriesofnewrareearthcatalystsystemssuchasNd(P204)3/Al(iBu)3,Nd(P204)3/Al(iBu)3/CCl4,Nd(Oct)3/Al(iBu)3,Ln(acac)3/BuMgCl,Y(acac)3/Al(iBu)3/BuLi,Nd(naph)3/BuLi,andNd(O…  相似文献   

5.
INTRODUCTIONManyimagingtechniques,likePET ,fMRIandSPECT ,candemonstrateincreasesinre gionalcerebralbloodflow(CBF)ormetabolicrateduringcertainneuronalstimulation .Butthesetechniquesarealwaysexpensiveandmoretimeconsumingandrepeatedmeasurementsaredifficult.T…  相似文献   

6.
OBSTACLE DETECTION BY ALV USING TWO 2D LASER RANGE FINDERS   总被引:6,自引:0,他引:6  
INTRODUCTIONObstacleavoidanceisanessentialtaskoftheALV .Toachievethis,aquickandreliablede tectionofobstaclesisveryimportant.Severalclassesofactivesensorscanbeusedforthispur pose .Alaserrangefinder (LRF)cansuitablybeusedtodetectobstaclesaheadoftheALV .3DLRFs…  相似文献   

7.
AClasofIterationMethodfortheBestApproximationProblemsWangDerenZhaoFengguang(ColegeofSciences)AbstractWeproposeaclassofiterati...  相似文献   

8.
Teachertalk (TT)isofcrucialsignificanceforallclassrooms ,especiallytheEnglishlanguageteachingclassroom ,becauseinEnglishteaching (ET) ,languageisnotonlytheobjectiveofthecourse ,butalsothemediatoachievetheobjective.Boththeorga nizationoftheclassroomandtheproc…  相似文献   

9.
Mikeworkedinanofficeinasmalltown .Onedayhisboss (老板 )saidtohim ,“Mike ,IwantyougotoRichmond,toanofficethere ,toseeMrShute .Here’stheaddress.”MikewenttoRichmond .Whenhewalkedoutofthestation ,hethought,“Theofficeisn’tfarfromthestation .I’llfinditeasily .”Butaftera…  相似文献   

10.
晋东南师范专科学校位于长治市城区境内 ,占地面积92 2 0 0m2 。校园环境优美 ,绿树成荫 ,植物种类繁多。经过初步调查 ,校园内现有植物 65科 ,13 0属 ,166种。现按《克郎奎斯特分类系统》概述如下 :Phylum 裸子植物门 GYMNOSPERMClassis 铁树纲 CYCADOPSIDAFamilia 1 苏铁科 Cycadaceae铁树 CycasrevolutaThunb .Classis 银杏纲 GINKGOPSIDAFamilia 2 银杏科 Ginkgoaceae银杏 GinkgobilobaL .Cla…  相似文献   

11.
DirectElectronTransferReactionsofGlucoseOxidaseandD┐AminoAcidOxidaseataGlasyCarbonElectrodeinOrganicMediaWeiJianjunQinYiqinLi...  相似文献   

12.
1 Introduction Elasticmetalplastic (EMP) journalbearingisakindoforiginalbearing .Thebushiscomposedofthree layermaterials :purepolymerlayer ,polymere lasticlayerandsteelbase .Thefirsttwosuperstra tumsarecalledcompositelayer.Therigidityofcom positelayerisone te…  相似文献   

13.
构造如图所示的几何图形,设⊙O为单位圆,直角△ABC的边AC、BC切⊙O于M、N,PE⊥OM,∠AOM=∠α,易知sinα=PE,cosα=OE,tgα=AM,ctgα=BN,secα=OA,cscα=OB.1 证明同角三角函数的基本关系式平方关系 在Rt△OEP、Rt△OMA、Rt△BNO中,应用勾股定理可得sin2α+cos2α=1,1+tg2α=sec2α,1+ctg2α=csc2α.例数关系 利用Rt△OEP∽Rt△OMA,Rt△OEP∽Rt△BNO,Rt△OMA∽Rt△BNO,分别得1…  相似文献   

14.
OnColegeEnglishClasroomResearchLinLiechengItisadecadesincethecaryingoutoftheCOLLEGEENGLISHTEACHINGSYLLABUS.Wearenowfacedwith...  相似文献   

15.
Definition LetWbeasubspaceofMn(C) ,then ordermatrixspaceoncomplexfield .IfAB =BA , A ,B∈W ,thenWiscalledacommutablematrixspace(CMS)ofMn(C) . AmongallCMSofMn(C) ,theremustexistaCMSwithmaximaldimensions,denotedbyW(n)max,andthemaximaldimensionsbyd(n)max.Theconstruction…  相似文献   

16.
Ⅰ .填空题A)根据句意用括号内所给单词的正确形式填空1 .DidyoulearnEnglishallby     ( you) ?2 .Thistreehasgreen     (leaf)allovertheyear.3.Nothingcanstopmefrom     (study)English .4.Ican′tseethewordsontheblackboard     (clear) .5 .TheBlacksliveonthe     (five)floor.B)词语释义(  ) 6.Theystoppedtalkingwh…  相似文献   

17.
INTRODUCTIONManynonlinearproblems ,suchasnonlinearellipticboundaryvalueconditions,integrationequationinradicaltransfer,optimalsolutioninoperatortheory ,canbededucedtosolvetheequationf(x) =0 ,( 1 )wheref:X→YisaFrechetdifferentiablenon linearoperatorwhichmapsBan…  相似文献   

18.
请看下面几道高考题 :1 .CarolsaidtheworkwouldbedonebyOctober,personallyIdoubtverymuch .(NMET’99)A .it B .that C .when D .which2 .ismentionedabove ,thenumberofthestudentsinseniorhighschoolisincreas ing .(NMET’99上海 )A .Which B .As C .That D .It3.Dorothywasalwaysspeakinghighlyofherro…  相似文献   

19.
听力部分 ( 30分 )  Ⅰ .听句子 ,选出句子中所包含的信息 (共 6分 ,每小题 1分 )1.A .NextMonday . B .ThisSunday .C .ThisSaturday .D .NextSunday .2 .A .Nohousework .B .It safineday .C .Nohomework .D .Noclass.3.A .5 0 0 90 6 6 .B .5 0 0 990 6 .C .5 5 0 0 90 6 .D .5 0 0 996 6 .4 .A .Theteacherneedshelp .B .Theteacherisintheoffice .C .Someoneisreadin…  相似文献   

20.
INTRODUCTIONVisibleandnearinfraredreflectionspectros copywasprovedinrecentyearstoofferthepos sibilityofobtainingarapid ,non destructiveesti mationofplantnitrogencontents(Thomasetal.,1 972 ;Hinzmanetal.,1 986;Takebeetal.,1 990 ;Filellaetal.,1 995;Blackmeretal.,1 994 ,1 996;Ladha…  相似文献   

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