单词	eta meson
释义	eta meson noun : an uncharged elementary particle with zero spin that has a mass 1074 times the mass of an electron and that decays rapidly especially into pions called also eta particle Word History Etymology eta entry 1
随便看	covarecas covariance covariances covariant covariants covariate covariation covariations covaried Covarrubias covary covarying cove cove ceiling cove lighting coved coved vault covelline covellines covellite covellites coven covenant covenant of salt covenant theology

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