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1.
Inrecentyears,intelligentstructuresandsmartsystemshavebecomeahottopic.Becauseoftheirdirectandconversepiezoelectriceffects,piezoelectricmaterialshavebeenwidelyusedtomakevarioustransducersandactuatorsandhaveimportantapplicationsinhightechnologysuchasele… 相似文献
2.
《中南工业大学学报(英文版)》1999,(2)
Electrodematerial,especiallyanodematerial,isadecisivefactorforthesuccessofanelectrolysistechnologicalprocess.Itssuperpotentialvalueisdirectlyrelatedtotheenergyconsumptionofdirectcurrentintheelectrolysisprocess.Itslifespanisthekeyintheindustrializati… 相似文献
3.
0 INTRODUCTIONAcrackisusuallyregardedasofzero thicknessandinclosecontactwiththemediaoneithersideandthereisnocontactforcebetweencracks.Thecrackscansupportnotonlystressbutalsopullandshearingforce ,sothemediumbetweencrackskeepsthecon tinuumofstressanddispl… 相似文献
4.
Electronic structures and properties of V, Nb and Ta metals 总被引:3,自引:0,他引:3
0 IntroductionTodesignalloysscientifically ,systematicscienceframeofmetalsandalloysincludingthesystematicscienceofpuremetals (one atom (OA)theory) [1,2 ]andthesys tematicscienceofalloys (characteristiccrystal(CC)the ory) [3~ 6 ]areestablished ,whichcangivediagramsof… 相似文献
5.
Cyclopropylamineisanimportantintermediateforsynthesisofantibioticmedicinessuchasciprofloxacin,profloxacin,sparfloxacin,etc.,andisusedtopreparefinechemicals.Thoughsomeresearchersstudiedthesynthesisofcyclopropylamine,thismethodisnotsuitableforlargescalepr… 相似文献
6.
ithrecentadvancesinpolymersynthesistechniques,increasingattentionisbeingpaidtotheanalysisofinteractionofelectromagneticwaveswithcompositematerials.Ithasbecomeanimportantfieldtoinvestigatetheelectromagneticpropertiesandtheapplicationperspectiveofthosem… 相似文献
7.
郭志忠 《哈尔滨工业大学学报(英文版)》2001,8(4)
0 INTRODUCTIONTheloadcharacteristicshavesignificanteffectonsystemdynamicsandthusconstitutethemostimpor tantelementinhighqualitystabilityassessmentin cludingvoltagestability[1] .AlthoughclassicalloadmodelssuchasconstantP Q ,constantimpedanceandconstantcurr… 相似文献
8.
Thedislocationemissionfromthecracktipandthenucleationandpropagationofmicrocrackscanbestudiedbyinsitutensiletestunderatransmissionelectronmicroscope(TEM)[1—3].However,thereisnostudyonatomicscalemicrostructureofcracktips,especiallyonthoseofloadedcracks.Fora… 相似文献
9.
ThehighqualityofkaolinwhichisabundantincoalmeasuresinChinahasattractedmuchattentionofpeopleallovertheworld .Becauseofthehighcontentofcarbon ,thiskindofkaolinmustbecal cinedtoincreaseitswhitenessbeforeitcanbeinten sivelyprocessed .Thesurfacemodificationof… 相似文献
10.
0 INTRODUCTIONMonitoringofmachiningprocess ,suchasmoni toringchatterandtoolwearinmilling ,isclassicprob lembasedonsignalprocessing .Signals (suchasvi bration ,forceandacousticemission)collectedbythesensorsaretypicallyaffectedbytheprocessdefects ,processworki… 相似文献