简介:Anoveltwo-wayrotaryjoint(SandPband)isdescribed.ForSbandrotaryjoint,VSWRislessthan1.2overthefrequencyrangefrom1.2GHzto4.4GHz.ForPbandrotaryjoint,thestructureofthereentrantresonatorisusedtoreducethelengthoftherotaryjointtoaboutλ/4,andthespecialandsmallsizerequirementissatisfied.
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简介:Thelinguisticinterferenceofone’smothertonguealwaysposesanobstacletohisorherlearningoffor-eignlanguagesandteachersshouldtrytheirbesttodis-covermeanstoovercomethis.ThispaperanalyzestheformsandcausesofChinglish,whichiscreatedbyadultChineselearnersofEnglishthroughtheirmoth-er-tongueinterference.AfteracontrastivestudyofsomelinguisticfeaturesbetweenChineseandEnglish,theauthorliststencommonformsofChinglish,il-lustratedwithexamplesfromhisownteachingprac-tice,andpointsouttheirrespectivecausesandsomepossiblemeasurestoeradicatethem.