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500 个结果
  • 简介:每个人都有弱点,即便是那些看上去很强的人也如此。过分在意自身的缺陷,就无法强化你的优势。记住:我们都是被上帝咬了一口的苹果。

  • 标签: 中等教育 英语教学 课外教材 英文
  • 简介:一只有裂缝的水罐为自己的缺陷而深感内疚,但它忽略了由它浇灌出的美丽花朵。人人都有属于自己的不足,只要正视它们,那么……AwaterbearerinIndiahadtwolargepots,eachhungoneachendofapole,whichhecarriedacrosshisneck.Oneofthepotshadacrack(裂缝)init,andwhiletheotherpotwasperfectandalwaysdeliveredafullportionofwaterattheendofthelongwalkfromthestreamtothemaster蒺shouse,thecrackedpotarrivedonlyhalffull.Fortwoyearsthiswentondaily,withthewaterbearerdeliveringoneandone鄄halfpotsfullofwatertohismaster...

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  • 简介:LOCATEDinGuizhouProvince,southwesternChina,QianxinanBouyei-MiaoAutonomousPrefectureisatouristdestination,duetoitsextraordinarynaturalenvironmentanddistinctiveethnic

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  • 简介:这个故事发生在古代印度。仆人每天要往主人家挑一担水,在他挑水杆子的一头是一个精致完美的好罐子,另一头却是一个有裂缝的破罐子。好罐子洋洋得意,它每次都能圆满完成任务;破罐子自惭形秽,因为每次到家时,只剩下了半罐水。有一天,破罐子为自己没有把事情做好而羞愧地向仆人道歉。然而,出乎它的意料,仆人告诉了它一个秘密,破罐子惊喜地发现原来自己的缺点利用好了,可以转化成为优点,办成好罐子办不成的事……

  • 标签: 大学英语 注释 读物 阅读练习 参考答案
  • 简介:目的探讨B、尿LH峰值、相结合,综合监测卵泡发育与排卵情况,有效治疗不孕症及指导计划生育.方法采取78例不孕症妇女的168个月经周期进行B、尿LH峰值.结果168个月经周期的监测中发现尿LH出现峰值为116,准确率为96%,且与超声监测提示的时间基本一致.无卵泡发育16例,无优势卵泡形成18例,黄体化卵泡不破裂19例.结论尿LH峰值对排卵预测有很好的准确性和B监测相结合,可简便而迅速、准确地预测监测卵泡发育与排卵,从而指导计划生育,掌握受孕时机,指导临床用药.

  • 标签: 不孕症 超声检查 尿LH
  • 简介:Inthispaper,wepresentthemodelofthresholdschemeswithweightsasanaturalgeneralizationofShamir'sthresholdschemeandshowhowtoapplythemodeltoconstructsecretsharingschemesbytwoexamples.

  • 标签: 秘密共享方案 阈值方案 加权 线性空间
  • 简介:摘要 针对某型惯性导航系统稳定回路调试出现的惯性平台方位环谐振峰值差故障,对惯性平台进行分析研究,找出影响谐振峰值差的关键因素并制定措施,从而解决谐振峰值差问题。

  • 标签: 惯性导航系统,惯性平台,谐振峰值
  • 简介:Steppedfrequencysignalisoftenusedtosynthesizehigh-resolutionrangeprofile,butredundanthigh-resolutionrangeprofileexistsbeforesynthesis.Twomethodshavebeengiventoextracttargetfromoverlappedhigh-resolutionrangeprofileandanalyzedtoshowhowspuriouspeaksappear.Thispaperprovidesareverse-countalgorithmtoresolvetheproblemofspuriouspeaksformovingtarget.Thisproposedmethodselectsthepeakwithmaximumamplitudeastheextractedtargetandgetsitspositionbyusingthenumberofsamplesprcedingbeforethepresentsamplepositionandthenumberofhigh-resolutionrangecellofthetarget.Thisproposedmethodiscomparedwiththealreadygivenmethodandtheresultshowstheabilityoftheproposedmethodtoremovespuriouspeaks,itprovidesthefoundationforhigh-resolutionrangeprofile.

  • 标签: Stepped FREQUENCY Imaging MOVING SPURIOUS PEAK
  • 简介:恢复烃源岩生烃门限是盆地模拟不可缺的一部分。在前人预测生烃门限深度统计模型基础上,本文提出了改进方法,并应用于辽河断陷某油气田的盆地模拟,证实为一更合理的方法。

  • 标签: 生烃门限 模拟方法 回归分析 含油气盆地
  • 简介:In2005,Bao,etal.[Appl.Math.andComput.,vol.169,No.2,2005]showedthatTzeng,etal.’snonrepudiablethresholdmulti-proxymulti-signatureschemewithsharedverificationwasinsecure,andproposedanimprovedschemewithnoShareDistributionCenter(SDC).ThispapershowsthatBao,etal.’sschemesuffersfromtheproxyrelationshipinversionattackandforgeryattack,andpro-posesanimprovementofBao,etal.’sscheme.

  • 标签: 计算机技术 安全技术 保密技术 设计方案
  • 简介:Beingoneofthemarketsmoststimulatingtoinvestors,theChinesepowermarkethasalreadyshownitsinvestmentopportunitiesthatnoinvestorcanignore.Butpresently,whetherexperiencedpowerenterprisesinmarketparticipationorgreenhandspreparedforrushingintothemarket,theywilldiscoverthatevenunderderegulationcondition,therearestillmanyinevitableandunsolvablenonmarketproblemsexistinginpowerinvestment.

  • 标签: 电力工业 投资 经济发展 电力市场 效益
  • 简介:Thispaperproposesacircularthresholdquantumsecretsharing(TQSS)schemewithpolarizedsinglephotons.Apolarizedsinglephotonsequencerunscircularlyamonganytormoreofnpartiesandanytormoreofnpartiescanreconstructthesecretkeywhentheycollaborate.Itshowsthatentanglementisnotnecessaryforquantumsecretsharing.Moreover,thetheoreticefficiencyisimprovedtoapproach100%asthesinglephotonscarryingthesecretkeyaredeterministicallyforwardedamonganytormoreofnparties,andeachphotoncancarryonebitofinformationwithoutquantumstorage.Thisprotocolisfeasiblewithcurrenttechnology.

  • 标签: 量子秘密共享 阀值量子秘密共享 量子安全 高频率多路通信
  • 简介:在大型工具书中,常用'门槛'来解释在古代被训释为'门限'的单音词.纵观前人训诂,'门限'有广义、狭义之分.广义是指位于门中、门下的用来固定门扇的竖木、横木;狭义的用法同今'门槛'.

  • 标签: 门限 门槛 工具书 释义
  • 简介:Anewpolymer,polyzirconoxanesal(PZS),issynthesizedfromthereactionofzirconiumoxychlorideoctahydrate(ZrOCl2-8H2O)withacetylacetone(Hacac)andsalicylalcohol(SA)byone-potprotocol.Thepolymerissolubleincommonorganicsolvents,suchasethanol,methanol,acetone,tetrahydrofuranandchloroform,andexhibitsrheologywithviscosityof100-300mpasat25℃.Thesepropertiesaresuitableforusesinfabricationofceramicmatrixfibercomposites.Pyrolysisofthispolymerat1300℃inargonprovidesnanosizedZrCwithsphericalmorphologyandsizeof20-100nm.

  • 标签: ZIRCONIUM CARBIDE Preceramic POLYMER MORPHOLOGY
  • 简介:摘要:轮对故障动态检测系统在地铁场段设备中作为关键设备之一,有着重要作用,可对通过设备的电客列车轮对进行轮径、轮缘厚、踏面缺陷、不圆度等数据测量,并及时提出报警。

  • 标签: 轮对故障动态检测系统 门限值 故障 测量 原理
  • 简介:Experimentaldata,obtainedfrompreviousstudies,onCriticalTractiveStress(CTS)ofnon-uniformsediments,havebeenusedtoverifytheadequacyofexistingrelationshipsforCTSofnon-uniformbimodalsediments.Keepinginviewtheperformanceofsuchrelationships,anewrelationshipforcomputationofdimensionlessCTSofindividualsizefractionofnon-uniformunimodalandbimodalsedimentshasbeenproposedintheformofpowerlaw.Thecoefficientandexponentoftheproposedpowerlawhavebeenempiricallycorrelatedwithsedimentcharacteristicsforavailablesedimentdata.Theproposedrelationshiphasbeenvalidatedwithindependentflumeandfielddatatoassesstheirapplicabilityforunimodalandbimodalsediments.

  • 标签: 沉积物特征 双峰 单峰 运动 阈值 非均匀沙