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500 个结果
  • 简介:Amodelofquasi-CPA(chirpedpulseamplification)system,inwhichtheinputisthetransform-limitedGaussianpulses,issetupnumericallytoinvestigatetheimpactofthesecondorderdispersionontheadaptivecompensationofself-phasemodulation(SPM)effect.Theadaptivephasepre-shapingcontrolledbydifferentialevolutionalgorithmisintroducedtotheinputpulsebeforeamplificationandrecompression.Withmaximizingthepeakpoweroftheoutputpulse,thesimulationresultsshowthatthenormaldispersionisreallyhelpfultoeliminatethesidelobesoftheoutputpulseandincreasethepulsepeakpower.

  • 标签: 自适应补偿 注册会计师 脉冲整形 二阶色散 SPM 啁啾脉冲放大
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  • 简介:Therewasonceatraveler.Hewaswetandcoldbecausehehadbeenridingintherain.Atlasthereachedacountryinn(酒店).Theinnwassocrowded(拥挤的)withpeoplethathecouldnotgetclosetothefire,sohecalledouttotheinnkeeper,""Takesomefishtomyhorse!""Theinnkeeperanswered,

  • 标签: 初二 英语 幽默故事 阅读欣赏
  • 简介:RiceScience(ISSN1672-6308),sponsoredbytheChinaNationalRiceResearchInstituteandpublishedbytheElsevierBV,isaninternationalpeer-reviewedjournalwithfourissuesandonevolumeperyear.Itpublishesoriginalresearchpapers,shortcommunicationsaswellasreviewarticlesunpublishedonappliedricescienceinEnglishlanguage.

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  • 简介:ThemicrostructureofsynthesizedAT(A-luminumtitanate)hasbeenimprovedefficient-ly,AndthemicrocrackofATformedduringcoolingandabnormalgraingrowthhavebeenlimitd.Therefore,thesinterabilityandmechanicalpropertiesofATmaterialhavebeenenhanced.

  • 标签: 三乙酸铝 制备 分散性 物理性质 合成 微观结构