简介：

简介：

简介：Withtheadvantagesoftransmittingenergyfrommultipledirectionstoonedirectionandtransformingvibrationfromonesourcetomultipledirections,thetwo-dimensionalvibrationdirectionconverterhasimportantapplicationsinpowerultrasonictechnology.However,forthecomplexityofusingthewaveequationtodesignandanalysisthetwo-dimensionalvibrationdirectionconverter,aconciseequivalentcircuitfortheconverterisinvestigated.Byintroducingthetwo-dimensionalmechanicalcouplingcoefficientandthelongitudinalforcetransformcoef-ficient,andusingtheelectromechanicalanalogyprinciple,theequivalentcircuitandresonancefrequencyequationofthetwo-dimensionalvibrationdirectionconvertervibratinginanti-phaseandin-phasetwo-dimensionalcoupledvibrationarededuced.Theresonancefrequenciesofthevibrationdirectionconvertersoftwodifferentmaterialsarecalculatedbyusingtheproposedfrequencyequation,whichareinagreementwiththeresultsfromthefiniteelementmethodandtheexperimentaltest.Itprovidesaconcisemethodforthedesignandapplicationsofsuchultrasonicvibrationsystem.

简介：ThispaperinvestigatestheevolutionarychangeintheOF(OF)ofhedgesindifferentmovesofEMRAs(EMRAs).Twocorporaareestablishedforlongitudinalstudy,withCorpusAconsistingofEMRAsfrom1990-1994andCorpusBfrom2005-2009.Generally,nosignificantchangehasbeenfoundinoveralluseofhedges.However,apartfrommove6,7and10,wehavefoundsomeinterestingchangesintheothermoves.Ontheonehand,theOFofhedgesinmove1,move3,move4andmove5showsasignificantincrease.Ontheotherhand,theOFofhedgesinmove2,8,9andmove11showasignificantdecrease.

简介：

简介：TheBerneConventionalsorequiresnoformalitiessuchasanoticeforcopyrightprotection,internationalcopyrightprotectionhasalwaysbeenacomplicatedproblemforallthecountries,BerneConventioncountrieswillgiveitprotection

简介：

简介：空间关联系数是为对浅水里的健全繁殖的描述的最重要的参数之一。纵的关联长度的频率依赖仍然是一个开的话题。我们在一个浅水实验观察到以波长的单位的纵的关联长度随频率的增加增加。这现象没在出版报纸被看见。理论分析和数字模拟显示底部变细的非线性的频率关系是这现象的主要原因。

简介：

简介：TheLongitudinalAerodynamicCharacteristics(LACs)ofawing-bodywithouttailunitiscomputedandtestedinwindtunnel.TheempiricalformulasofDatcomandsomeotherauthorsareappliedtoestimatethebasicAerodynamicCoefficients.Twowingoptionsarecoveredasanalysisspace,namely,thedouble-deltawingandstreakwing,gettingtwoanalysisgroupsrespectively.Goodagreementbetweenthecomputationresultsandthewindtunneltestsshowsthatthemethodologypresentedisasimpleandreliablewaytocalculatethiskindofnovelwing-bodyconfigurations.

简介：

简介：ＳｔｒｅｎｇｔｈｅｎｉｎｇＰｒｏｔｅｃｔｉｏｎＯｆＣｕｌｔｕｒａｌＲｅｌｉｃｓＤＡＩＮＺＩＮＴｉｂｅｔ＇ｓｃｕｌｔｕｒａｌｒｅｌｉｃｓｃｏｎｓｔｉｔｕｔｅａｎｉｍＰＯｒｔａｎｔｐａｒｔｏｆｔｈｅｂｒｉｌｌｉａｎｔｈｉｓｔｏｒｙａｎｄｃｕｌｔｕｒｅｏｆ...

简介：TheChinesegovernmentissuedtheProgramofWomen’sDevelopment(2001-2010)andtheProgramofChildren’sDevelopment(2001-2010)inMay2001.Thewomen’sdevelopmentprogrammakesequalitybetweenmenandwomenabasicstatepolicyforpromotingsocialdevelopmentandidentifiessixpriorityareas,namely,womenandeconomy,women’sparticipationinpolicydecisionmaking

简介：TheYangtzeRiveristhelargestriverinChina,about6,300kilometreslongwithadrainageareaandpopulationaccountingfor18.8percentand33percentrespectivelyinChina.AimingatincreasingforestandvegetationareasonthemiddleandupperreachesoftheYangtzeRivertocontrolwaterandsoilerosion,theChinesegovernmentin1989decidedtocommenceaconstructionprojectfortheprotectionoftheforestsystemonthemiddleandupperreachesoftheYangtzeRiver.Theprojectcovers645counties(citiesanddistricts)in13provinces,

简介：

简介：Sincethe1970s,environmentalissueshavegraduallyassumedimportanceintradediscussions.Tradeliberalizationandenvironmentalprotectionhavebecomeincreasinglyinterlinkedbecauseofthemarkeddevelopmentofinternationaltradeanditsseriouslydegradingeffectontheenvironment.TheWTO,asthesoleinternationalorganizationregulatingtrade,hasinevitablycomeintothespotlight.AclearreferencetotheimportanceofsustainabledevelopmentliesinthepreambleoftheWTOandintheestablishmentofanewCommitteeonTradeandEnvironment(CTE).However,theroleoftheWTOinthisissueisstillhotlydebated.LiberalistsmaintainthattheWTO,asatrade-regulatingbody,hasgonetoofarinenvironmentalprotectionwhilstenvironmentalistsclaimthattheWTOhasnotgonefarenough.ThispaperattemptstoanalyzetheroleoftheWTOinthecomplicatedlinkagebetweentradeliberalizationandenvironmentalprotection,concludingthatonlyundercertaincircumstancescantheWTOplayanactiveroleinmakingtradeliberalizationandenvironmentalprotectionmutuallysupportive.

简介：traditional current differential protection cannot identify such fault for the sake of sensitivity limited by normal load current. RCS-985 Series generator-transformer unit protection is equipped with transformer DPFC percentage restraint differential protection and generator DPFC percentage restraint differential protection. Comparing with traditional percentage restraint differential protection,DPFC percentage restraint differential protection makes use of DPFC in phase current on each side of transformer and DPFC in differential current,Inter-turn fault is the main kind of fault in electric power transformer. It is meaningful that employing sensitive and secure protection to identify inter-turn fault inside power transformer. In RCS-978 series power transformer protection

简介：在经济与文明日益发展的今天，环境污染被全世界人们所关注，生存环境的健康与洁净与我们每一个人的生命都息息相关，如何治理环境污染，保护良好的生存空间，已经迫在眉捷，看看下文的中学生朋友们又是如何看待这一现象的吧！

简介：

简介：Ⅰ.Lawsandsystems1.LawsThereisnounifiedlaworregulationinHongKongdevotedtotheprotectionofminors.Theprovisionsconcerningtheprotectionofminorsarereflectedinmanyordinances.Chapter226ofHongKongLaws:JuvenileOffendersOrdinancesays:Itshallbeconclusivelypresumedthatnochildundertheageof10yearscanbeguiltyofanoffence.Chapter200providesthatamanwhohasunlawfulsexualintercoursewithagirlundertheageof13shallbeguiltyofanoffenceandshallbeliableonconvictiononindictmenttoimprisonmentforlife.Section125oftheOrdinanceprovidesthatamanwhohasunlawfulsexualintercoursewithawomanwhoismentallyincapacitatedshallbeguiltyofanoffenceandshallbeliableonconvictiononindictmenttoimprisonmentfor10years.