简介：Inthispaper,wewillexploretheessenceofthephenomenonthatstatewithlessentanglementmaygenerategreaterBellviolationinthetwo-qubitBelltestswithCH-typeinequalities,i.e.,morenonlocalitywithlessentanglement.Wewillshowthatthisinterestingbutcounterintuitivephenomenoniscausedbytherotationalasymmetryofthenonmaximallyentangledstateinthemeasurementplane.Thisasymmetryallowstheboth-sidedetectionprobabilitiesandtheone-sidedetectionprobabilitiesobtaintheirmaximalvalueswithnonmaximallyentangledstate.ButthemaximalBellviolationmaynotalwayshappenonnonmaximallyentangledstate,becausetheseprobabilitieswillcompetewitheachother,andtheBellviolationbehavesdiferentlyforvariousCH-typeinequalities.