单词	cesium
释义	cesiumce‧si‧um /ˈsiːziəm/ noun [uncountable] Examples EXAMPLES FROM THE CORPUS During irradiation, food is exposed to gamma rays from sources such as cobalt 60 or cesium 137. The definition of a second has since officially been the time it takes a cesium atom to make 9,192,631,770 vibrations. the American spelling of caesium
随便看	homesteader home stretch home town home truth home video homeward homework homeworker homeworking homey homicidal homicide homily homing homing device homing pigeon hominid hominy homo- homo homoeopath homoeopathy homogeneous homogeneously homogenize

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