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词汇 cesium
词根词缀
Online Etymology Dictionary

cesium
n.
also caesium, rare alkaline metal, 1861, coined by Bunsen and Kirchhoff in 1860 in Modern Latin (caesium), from Latin caesius "blue-gray" (especially of eyes), in reference to the two prominent blue lines in its spectrum, by which it was first identified.
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更新时间:2025/1/25 10:03:51