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	empiricism empiricist emplacement employ employable employee employer employment Employment Act employment agency emporium empower empowerment empress empties emptily emptiness empty empty-handed empty-headed EMS EMU emu emulate emulation

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