简介:案例概述绘本故事由著名作家艾瑞克·卡尔(EricCarle)创编,讲述了一条毛毛虫由卵到美丽的蝴蝶的故事。用奔放不羁而又浓烈绚丽的色彩,为孩子们唱了一首生命的赞歌。在教学活动中,教师利用平台技术中的二维码扫描技术进行答案数据的统计与数据分析,有针对性地进行答题解疑,进而促
简介:very是英语中最常用的单词之一。它作副词用时,意思是“很,甚,极其,非常”等,可在句中修饰形容词、副词、不定代词、序数词、分词和介词短语等。very作形容词修饰名词时,意思是“真的、真正的、就是”等。要正确使用very,须注意以下几点:1.very修饰形容词时,该形容词必须用原级。若被修饰的形容词是比较级,则应该用much作其修饰语,不用very。例如:Thestarslookverysmallonlybecausetheyaremuchfartherawayfromus.星星看上去很小,仅仅是因为它们离我们很远。Thatisaveryinterestingstory,butthisstoryismuchmoreinterest-ingthanthatone.那是一个很有趣的故事,但是这个故事比那个有趣得多。2.very修饰过去分词时,一般该分词已完全形容词化。若该分词仍然带有很强的动作意味,则不用very而用much作其修饰语。例如:Oftentheygetveryexcitedwhen“their”playerorteamwin...
简介:BlakeGriffin#32oftheLosAngelesClippersgoesupforadunkagainstDaniloGallinari#8oftheNewYorkKnicksatStaplesCenteronNovember20,2010inLosAngeles,California.
简介:SiliconPhotodiodewithVerySmalSensitiveArea①YINChangsong,LIXiaojun(WuhanUniversity,Wuhan430072,CHN)Abstract:ThesiliconPNjuncti...
简介:Intheapplicationsofaircrafts,automobiles,railways,biomedicineandoff-shorestructures,manycomponentsmayexperiencecyclicloadingconditionsoveralongperiodoftime,runninguptoseveralhundredmillioncycles.1Determinationoflonglifefatiguebehaviorbecomesextremelyimportantforbetterunderstandinganddesignofcomponentsandstructures.
简介:有一些18的Qinling隧道。488km在Qinling山的中间从Xi鈥檃n(山西省)位于铁路线到Ankan(四川省)。它是在中国的最长双的轨道铁路隧道并且在世界上占据第三个位置。根据设计,在调查的altimetric控制引起的垂直方向的突破错误为穿透脸的盒子被限制到18mm。因为铺平的线路在长度在120km上到达并且必须在2800m高度温习二座山,一阶的精确铺平和精确严肃测量应该在构造阶段被执行。在这份报纸,与最后的结果分析铺平途径,新技术的申请,一些经验以及办公室计算的地被介绍。由过细的计划,组织和观察,二个隧道结束点之间的垂直差别的最后的精确性仅仅是8mm,并且它提供可靠调查为这个大隧道工程的保证。最后,这垂直差别象114mm一样高与主要测量结果显然区分开来,这被指出。它意味着主要结果不是足够精确的。
简介:WediscussthebosonizationofarelativisticverydenseFermigasinamagneticfieldandtheconsequentBoseEinsteincondensationoftheresultingrelativisticvectorgasofchargedparticles.Themodelmaybeappliedtopairedspin-upelectrons.Weshowthatsuchsystemsmaymaintainself-consistentlymagneticfieldsoforder10^10-10^13G.Thatpairingcouldbetheoriginoflargemagneticfieldsinsomewhitedwarfsandneutronstars.Forfieldslargeenough(-10^13forwhitedwarfs),thesystembecomesunstableandcollapses.
简介:在这篇论文,下列结果被使用农夫分解和弱反向的持有者不平等给:为有p的每r_1-(2~(n+1)100~(n~2)p(2~(3+n/(p-1))+1)b/a)~(-1)
简介:Veryhighcyclefatigue(VHCF)behaviorsofbridgesteel(Q345)weldedjointswereinvestigatedusinganultrasonicfatiguetestsystematroomtemperaturewithastressratioR=-1.Theresultsshowthatthefatiguestrengthofweldedjointsisdroppedbyanaverageof60%comparingtothebasemetalandthefatiguefailurestilloccurredbeyond10~7cycles.Thefatiguefractureofweldedjointsinthelowcycleregimegenerallyoccurredatthesolderwhileattheheat-affectedzone(HAZ)intheveryhighcycleregime.Thefatiguefracturesurfacewasanalyzedwithscanningelectronmicroscopy(SEM),showingweldingdefectssuchaspore,micro-crackandinclusionwerethemainfactorsondecreasingthefatiguepropertiesofweldedjoints.Theeffectofweldingdefectsonthefatiguebehaviorsofweldedjointswasdiscussedintermsofexperimentalresultsandfiniteelementsimulations.
简介:在飞机坠毁,轮船碰撞,和另外的事故以后产生的负担可以破坏很大的漂浮的结构(VLFS)并且创造另外的接头负担。在这研究,负担被考虑建立的轮船碰撞和波浪的联合效果打手势为多身体VLFS的微分方程。一个时间领域计算方法被建议在波浪计算VLFS的接头负担。LonguetHiggins模特儿被雇用模仿随机的波浪负担。液体力量和水动力学系数用DNVSesam软件被获得。运动当频率域水动力学系数被变换成运动的存储器函数时,微分方程被使用时间域方法计算时间域的微分方程。由于波浪和影响负担的联合行动,高周波的摆动在接头负担的时间历史曲线被观察。在0的波浪方向?
简介:Theeffectsofwaterdepthonthewave-inducedverticalbendingmomentandshearingforceonaverylargeFPSOarestudiedbyexperimentsandcomputationsforregularandirregularwaves.TherestrictedwaterdepthcompositeGreenfunctionisemployedtodevelopaprogramforthecomputationofthehydrodynamiccoefficientsoftheverylargeFPSOatshallowwater.Athree-segmentmodelwith1:100scaleistestedintheStateKeyLaboratoryofOceanEngineeringatShanghaiJiaoTongUniversityfortheverificationofthenumericalmethod.Theexperimentalandcomputationalresultsshowthatthewaterdepthhasasubstantialeffectonwave-inducedloads.Thewave-inducedverticalloadsincreasewiththedecreaseofwaterdepthforshallowwater.Especially,forultra-shallowwatertheseloadsincreaseveryevidentlywiththedecreaseofwaterdepth.Thelong-termpredictionvaluesofwave-inducedverticalloadsincreasewiththedecreaseoftheratioofwaterdepthtodraught.Thelong-termpredictionvaluesofwave-inducedverticalloadsareabout8%largerthanthosefordeepwaterwhentheratioofwaterdepthtodraughtis3.0.However,waterdepthhardlyaffectsthelongtermpredictionvaluesofwave-inducedloadswhentheratioofwaterdepthtodraughtislargerthan5.0.