简介：TheEnglishconstruction'XandY'referstothecoordinationoftwowordswithandasconjunction,XandYbeingofthesamepartofspeechandparallelmeanings.ThispaperisacognitivestudyofthelinearorderoftheEnglishconstruction'XandY'fromtheperspectivesofcognitivesalience,cognitiveiconicity,andcognitionofformalrules.Thelinearcharacteristicsof'XandY'arerevealedasfollows:1)salience-downgradingorder;2)chronologicaliconicity;3)cognitionofalphabeticorderandprosodicorder.

简介：SH-250Y自动点胶机是将精密点胶和准确定位安装在一个紧凑的桌面系统中，实现二者完美地整合于一体的全自动点胶机一、主要特点L．X、Y、Z三轴可作平面及立体运行；2．可作点、线、圆、圆弧和椭圆等图形涂胶

简介：Accordingtothedipoletransitionselectionrulesandbychoosingpropertransitionchannels,itisfoundthattheinvertedY-typefour-levelschemecanbeclassifiedintoninedifferent2nd-ordersubschemeswhenusingcorrespondinglaserfields,andtheycanbefurtherclassifiedintoeighty3rd-ordersubschemesindetailaccordingtodifferentexcitingintensitiesthatareappliedindifferentchannels.Inthispaper,thestructuremultiformityofinvertedY-typefour-levelschemeisdiscussedandthedemonstrationsonsomesubschemesarealsogiven.Atthesametime,thesubschemeswhichhavebeenstudiedarepointedout,butmostofthemhavenotbeenresearchedtothebestofourknowledge.

简介：Y＆D7200N桌上型自动点／涂胶机，外形紧凑，坚固耐用，可与胶阀、针筒搭配使用，适用于任何点胶应用的自动化，极其适用于成本考量和紧凑空间要求时应用。采用行业领先的软件通过示教盒按步骤指导用户操作的指示，数分钟内可完成复杂的点胶操作程序编写。

简介：Thispaperpresentsanewarraystructureforestimatingtwo-dimensional(2-D)direction-of-arrivals(DOAs).ThestructureiscalledY-shapedarray,whichhas10%betteraccuracypotentialthanthenewly-developedL-shapedarray.Agreatmeritisitsabilitytoestimate2-DDOAswhicheverdirectionsthearrivingsignalscomefrom,comparedwithL-shapedarraywhoseperformancedependsonDOAs.Simulationresultsaregiventodemonstratetheperformanceofthenewarray.

简介：Ｓｉｌｉｃｏｎ－ｏｎ－ｉｎｓｕｌａｔｏｒ１×２Ｙ－ｊｕｎｃｔｉｏｎＯｐｔｉｃａｌＳｗｉｔｃｈＢａｓｅｄｏｎＷａｖｅｇｕｉｄｅ－ｖａｎｉｓｈｉｎｇＥｆｅｃｔ①②ＺＨＡＯＣｅｚｈｏｕ（Ｍｉｃｒｏｅｌｅｃｔｒｏｎ．Ｉｎｓｔｉｔｕｔｅ，ＸｉｄｉａｎＵｎｉｖｅ...

简介：Thesilicon-on-insulator(SOI)1×2Y-junctionopticalwaveguideswitchhasbeenproposedandfabricated,whichisbasedonthelargecross-sectionsingle-moderibwaveguidecondition,thewaveguide-vanishingeffectandthefree-carrierplasmadispersioneffect.Intheswitch,theSOItechniqueutilizersiliconandsilicondioxidethermalbondingandback-polishing.Theinsertionlossandextinctionratioofthedevicearemeasuredtobelessthan4.78dBand20.8dBrespectivelyatawavelengthof1.3μmandaninjectioncurrentof45mA.Responsetimeisabout160ns.